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Refulgent Cypress

#39cb78
Notes

Refulgent Cypress (#39CB78) is a true teal with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (146°, 58%, 51%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#39cb78
RGB
rgb(57, 203, 120)
HSL
hsl(146, 58%, 51%)
HWB
hwb(146 22% 20%)
OKLCH
oklch(74.7% 0.171 153.5)
P3
color(display-p3 0.4096 0.7850 0.5010)
HSV
hsv(146, 72%, 80%)
LAB
lab(72.85% -56.61 30.64)
LCH
lch(72.85% 64.37 151.57)
CMYK
cmyk(72%, 0%, 41%, 20%)

Etymology

Refulgent
adjective

Latin refulgēns, shining-back — present-participle of refulgere, sharing root with fulgor (lightning). As a color modifier, refulgent implies a saturated-and-reflective-shining quality, the bright color of polished-bronze-and-armor reflective-surface mid-day-sun reflection. Sits at the bright-and-saturated end of the grid, parallel to effulgent and resplendent in usage.

Cypress
noun

The genus Cupressus, the slender Mediterranean conifers that frame Italian villa gardens and Greek cemeteries. The color refers to the dark scaled foliage of Cupressus sempervirens: a deep, slightly blue-green with the matte finish of resin-coated scale leaves. Darker than juniper, cooler than spruce, with the architectural weight of a tree shape that says Tuscany or funerary depending on context.

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.

#39cb78
Original
#cbba72
Protanopia
#b9ae7e
Deuteranopia
#00c8b6
Tritanopia
#a6a6a6
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).
Failon White
2.10:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
9.99:1

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
##39CB78
Display P3
Display P3
color(display-p3 0.4096 0.7850 0.5010)
P3 has subtle headroomOKLCH chroma 0.171

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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