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Functional Taurus Teal

#04817d
Notes

Functional Taurus Teal (#04817D) is a deep cyan with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (178°, 94%, 26%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. For a confident two-color system, pair it with its complementary red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#04817d
RGB
rgb(4, 129, 125)
HSL
hsl(178, 94%, 26%)
HWB
hwb(178 2% 49%)
OKLCH
oklch(54.5% 0.093 190.9)
P3
color(display-p3 0.2208 0.4981 0.4875)
HSV
hsv(178, 97%, 51%)
LAB
lab(48.52% -30.08 -6.31)
LCH
lch(48.52% 30.73 191.85)
CMYK
cmyk(97%, 0%, 3%, 49%)

Etymology

Functional
adjective

Latin fūnctiō, performance — adjectival suffix -al. As a color modifier, functional implies a clear-and-purpose-fit-and-utilitarian quality, the crisp color of Mid-Century-Modern and Bauhaus form-follows-function design-aesthetic. Sits at the crisp-and-functional end of the grid, parallel to practical and utilitarian in usage.

Taurus
modifier

Latin taurus, bull-of-the-zodiac. As a color modifier, taurus implies a bull-and-earth-sign-and-Venus-ruled-fixed-earth quality, the visual register of Mesopotamian-bull-and-Greek-Taurus hand-bull-and-earth-sign-and-Venus-ruled-fixed-earth Mesopotamian-bull-and-Greek-Taurus-and-Pleiades-cluster taurus-and-bull-and-earth-sign surfaces under Mesopotamian-bull-and-Greek-Taurus-and-Pleiades-cluster spring-and-April-and-May fixed-earth-sign-light. Sits at the modifier-and-zodiac end of the grid, parallel to aries and gemini in usage.

Teal
noun

Anas crecca, the small dabbling duck whose male in breeding plumage sports a chestnut head crossed by a glossy green-blue stripe. The color refers to that stripe — the iridescent panel just behind the eye: a saturated, slightly muted blue-green with the optical depth of structural color rather than pigment. Cooler than cypress, warmer than cerulean, with the ornithological specificity of a color named for one feather of one bird.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#04817d
Original
#787a7d
Protanopia
#696f7e
Deuteranopia
#008580
Tritanopia
#666666
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon White
4.73:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
4.44:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##04817D
Display P3
Display P3
color(display-p3 0.2208 0.4981 0.4875)
P3 has subtle headroomOKLCH chroma 0.093

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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