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Noble Bordo

#b031a8
Notes

Noble Bordo (#B031A8) is a true violet 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 (304°, 56%, 44%) 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#b031a8
RGB
rgb(176, 49, 168)
HSL
hsl(304, 56%, 44%)
HWB
hwb(304 19% 31%)
OKLCH
oklch(55.0% 0.208 330.7)
HSV
hsv(304, 72%, 69%)
LAB
lab(44.60% 63.67 -36.85)
LCH
lch(44.60% 73.56 329.94)
CMYK
cmyk(0%, 72%, 5%, 31%)

Etymology

Noble
adjective

Latin nōbilis, well-known / illustrious — sharing root with gnōscere (to know). As a color modifier, noble implies a saturated-and-dignified-and-aristocratic quality, the deep-rich color of pre-modern European noble-class hereditary-aristocratic livery-and-armorial bearings. Sits at the bold-and-aristocratic end of the grid, parallel to aristocratic and highborn in usage.

Bordo
noun

Polish for Bordeaux — adopted into Polish color terminology as the name for deep wine purple, the dominant Polish-folk church-textile color of the Counter-Reformation period. Bordo color refers to a Polish-Catholic Lenten purple chasuble: a saturated, slightly cool deep violet with the matte finish of multi-bath fermentation-and-iron-mordant wool. Slightly warmer than Russian purpurnyy.

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

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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.

#b031a8
Original
#255eab
Protanopia
#5870a5
Deuteranopia
#b74169
Tritanopia
#555555
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
5.45:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.85:1

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