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Unyielding Baldr Ultramarine

#2845b5
Notes

Unyielding Baldr Ultramarine (#2845B5) is a true blue 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 (228°, 64%, 43%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#2845b5
RGB
rgb(40, 69, 181)
HSL
hsl(228, 64%, 43%)
HWB
hwb(228 16% 29%)
OKLCH
oklch(44.3% 0.180 267.2)
HSV
hsv(228, 78%, 71%)
LAB
lab(34.07% 30.33 -62.27)
LCH
lch(34.07% 69.27 295.97)
CMYK
cmyk(78%, 62%, 0%, 29%)

Etymology

Unyielding
adjective

Old English un- (negation) plus gildan (to give-up). As a color modifier, unyielding implies a saturated-and-uncompromising quality where the hue refuses to fade-or-shift under any visual pressure. Sits at the bold-and-resilient end of the grid, parallel to indomitable and adamant in usage.

Baldr
modifier

Old Norse Baldr, fair-and-shining-god-of-light. As a color modifier, baldr implies a fair-and-shining-god-of-light quality, the visual register of Norse-Baldr-and-Breidablik-hall hand-fair-and-shining-god-of-light Norse-Baldr-and-Breidablik-hall-and-mistletoe-fall baldr-and-fair-and-shining-god-of-light surfaces under Norse-Baldr-and-Breidablik-hall-and-mistletoe-fall Asgard-pantheon-and-Hel-descent fair-radiance-light. Sits at the modifier-and-myth end of the grid, parallel to odin and freya in usage.

Ultramarine
noun

The pigment ground from lapis lazuli — the Afghan mineral imported through Venice in the late Middle Ages, more expensive by weight than gold during the Renaissance. The color refers to a freshly mixed ultramarine pigment in linseed oil: a saturated, slightly violet-shifted deep blue with the matte finish of micron-ground rock. Deeper than cobalt, cooler than royal, with the art-historical weight of the blue Vermeer reserved for Mary's robe.

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.

#2845b5
Original
#0057b9
Protanopia
#004ab3
Deuteranopia
#006276
Tritanopia
#474747
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
8.05:1
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
2.61:1

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