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Gladiatorial Powder

#3878d3
Notes

Gladiatorial Powder (#3878D3) 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 (215°, 64%, 52%) 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
#3878d3
RGB
rgb(56, 120, 211)
HSL
hsl(215, 64%, 52%)
HWB
hwb(215 22% 17%)
OKLCH
oklch(57.8% 0.155 257.7)
HSV
hsv(215, 73%, 83%)
LAB
lab(50.66% 10.58 -52.80)
LCH
lch(50.66% 53.85 281.33)
CMYK
cmyk(73%, 43%, 0%, 17%)

Etymology

Gladiatorial
adjective

Latin gladiātōrius, of the gladiator — adjectival suffix, derived from gladius (short-sword). As a color modifier, gladiatorial implies a saturated-and-combative-and-bloody quality, the deep-rich color of Roman-Colosseum gladiator-arena bloody-tunic-and-shield combat-attire. Sits at the bold-and-formal end of the grid, parallel to spartan and valiant.

Powder
noun

Talc — magnesium silicate ground to fine particles for personal hygiene since the nineteenth century. Powder blue refers to the pale, slightly green-shifted blue of mid-century Robin's-egg talc tins and the quilted cotton of newborn-boy nurseries: a soft, very pale blue with the matte finish of micron-scale particles. Lighter than periwinkle, warmer than ice, with the postwar consumer-goods association of a color tied to bath salts and powder rooms.

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.

#3878d3
Original
#4b80d7
Protanopia
#2e72d1
Deuteranopia
#008d9b
Tritanopia
#717171
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
4.38:1
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
4.80:1

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