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Robust Maya

#155bb2
Notes

Robust Maya (#155BB2) is a true azure 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 (213°, 79%, 39%) 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
#155bb2
RGB
rgb(21, 91, 178)
HSL
hsl(213, 79%, 39%)
HWB
hwb(213 8% 30%)
OKLCH
oklch(48.1% 0.154 256.8)
P3
color(display-p3 0.1709 0.3515 0.6749)
HSV
hsv(213, 88%, 70%)
LAB
lab(39.33% 12.90 -51.98)
LCH
lch(39.33% 53.55 283.94)
CMYK
cmyk(88%, 49%, 0%, 30%)

Etymology

Robust
adjective

From the Latin robustus, of oak — implying strength combined with substance. As a color modifier, robust describes saturation combined with body: a robust burgundy, a robust olive. Sits in the bold-and-warm corner alongside strong and solid, with the slightly textural implication of a color that has substance behind the pigment.

Maya
noun

Maya Blue — a saturated deep-blue pigment developed by the Mayan civilization from indigo dye and palygorskite clay, applied to murals at Bonampak and Cacaxtla. The combination produces unusual long-term lightfastness. The color refers to a freshly mixed Maya Blue pigment: a saturated, slightly cool deep blue with the matte finish of organic-and-clay pigment.

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.

#155bb2
Original
#2764b5
Protanopia
#0056b0
Deuteranopia
#00707e
Tritanopia
#525252
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
6.62:1
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
3.17:1

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
##155BB2
Display P3
Display P3
color(display-p3 0.1709 0.3515 0.6749)
P3 has subtle headroomOKLCH chroma 0.154

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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