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Unwavering Marine

#1053a7
Notes

Unwavering Marine (#1053A7) is a true azure 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 (213°, 83%, 36%) places it in the highly saturated band at a mid 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1053a7
RGB
rgb(16, 83, 167)
HSL
hsl(213, 83%, 36%)
HWB
hwb(213 6% 35%)
OKLCH
oklch(45.4% 0.150 257.2)
HSV
hsv(213, 90%, 65%)
LAB
lab(36.15% 13.44 -50.61)
LCH
lch(36.15% 52.36 284.88)
CMYK
cmyk(90%, 50%, 0%, 35%)

Etymology

Unwavering
adjective

Old English un- (negation) plus wafrian (to flicker). As a color modifier, unwavering implies a saturated-and-constant quality where the hue maintains its full strength without flicker or shift. Sits at the bold-and-firm end of the grid, parallel to steadfast and firm in usage.

Marine
noun

From the Latin marinus, of the sea — borrowed via French as both noun and adjective. Marine blue refers to the deep working blue of merchant-ship paint and naval uniforms before navy took over the term in the twentieth century. The color is a saturated, slightly muted deep blue with the matte finish of a shipyard pigment. Cooler than cobalt, warmer than navy, with the maritime weight of a word shared by every Romance language.

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.

#1053a7
Original
#1e5caa
Protanopia
#004fa5
Deuteranopia
#006875
Tritanopia
#4b4b4b
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).
AAAon White
7.45:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.82:1

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