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Effective Tyr Denim

#306798
Notes

Effective Tyr Denim (#306798) is a true azure with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (208°, 52%, 39%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#306798
RGB
rgb(48, 103, 152)
HSL
hsl(208, 52%, 39%)
HWB
hwb(208 19% 40%)
OKLCH
oklch(50.0% 0.098 248.0)
P3
color(display-p3 0.2437 0.3989 0.5805)
HSV
hsv(208, 68%, 60%)
LAB
lab(42.15% -1.66 -32.04)
LCH
lch(42.15% 32.08 267.03)
CMYK
cmyk(68%, 32%, 0%, 40%)

Etymology

Effective
adjective

Latin effectīvus, productive — adjectival suffix -ive. As a color modifier, effective implies a clear-and-purpose-achieving quality where the hue carries the visual register of successful-task-completion design-element. Sits at the crisp-and-functional end of the grid, parallel to practical and useful in usage.

Tyr
modifier

Old Norse Týr, one-handed-god-of-justice-and-war. As a color modifier, tyr implies a one-handed-god-and-Fenrir-binding-and-justice quality, the visual register of Norse-Tyr-and-Fenrir-binding hand-one-handed-god-and-Fenrir-binding-and-justice Norse-Tyr-and-Fenrir-binding-and-Tiwaz-rune tyr-and-one-handed-god-and-Fenrir-binding surfaces under Norse-Tyr-and-Fenrir-binding-and-Tiwaz-rune Asgard-pantheon-and-Tiwaz-rune-stone justice-and-binding-light. Sits at the modifier-and-myth end of the grid, parallel to thor and odin in usage.

Denim
noun

The diagonal-twill cotton fabric originally woven in Nîmes, France — serge de Nîmes, contracted to denim — and dyed with indigo since at least the eighteenth century. The color refers to a worn but un-faded pair of raw denim jeans: a saturated, slightly muted blue with the matte finish of cotton fiber that has absorbed dye through generations of weft and warp. Cooler than royal, warmer than navy.

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.

#306798
Original
#51699a
Protanopia
#435f97
Deuteranopia
#007378
Tritanopia
#5f5f5f
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
5.97:1
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
3.52:1

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
##306798
Display P3
Display P3
color(display-p3 0.2437 0.3989 0.5805)
P3 has subtle headroomOKLCH chroma 0.098

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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