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Lordly Antarctic

#4b78fe
Notes

Lordly Antarctic (#4B78FE) is a true blue with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (225°, 99%, 65%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#4b78fe
RGB
rgb(75, 120, 254)
HSL
hsl(225, 99%, 65%)
HWB
hwb(225 29% 0%)
OKLCH
oklch(61.5% 0.206 266.4)
HSV
hsv(225, 70%, 100%)
LAB
lab(54.11% 28.49 -71.27)
LCH
lch(54.11% 76.75 291.79)
CMYK
cmyk(70%, 53%, 0%, 0%)

Etymology

Lordly
adjective

Old English hlāford-līc, lord-like — adjectival suffix -ly. As a color modifier, lordly implies a saturated-and-aristocratic-and-haughty quality, the deep-rich color of pre-modern English-and-French manorial-aristocracy livery and hereditary-estate household-textile. Sits at the bold-and-aristocratic end of the grid, parallel to princely and patrician.

Antarctic
noun

The continent at Earth's southern pole — and the saturated deep blue of Antarctic polynyas (open-water gaps in the sea ice) and the deep blue beneath fresh-calved icebergs. Antarctic refers to a polynya in the Ross Sea: a saturated, slightly cool deep blue with the optical depth of cold polar seawater.

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.

#4b78fe
Original
#108aff
Protanopia
#007afb
Deuteranopia
#0098af
Tritanopia
#787878
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).
AA Largeon White
3.88:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
5.42:1

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