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Bold Shine Royal

#255fdc
Notes

Bold Shine Royal (#255FDC) is a true azure with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (221°, 72%, 50%) 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
#255fdc
RGB
rgb(37, 95, 220)
HSL
hsl(221, 72%, 50%)
HWB
hwb(221 15% 14%)
OKLCH
oklch(52.6% 0.201 262.8)
P3
color(display-p3 0.2076 0.3676 0.8324)
HSV
hsv(221, 83%, 86%)
LAB
lab(43.86% 27.87 -68.92)
LCH
lch(43.86% 74.34 292.02)
CMYK
cmyk(83%, 57%, 0%, 14%)

Etymology

Bold
adjective

Old English beald, brave, courageous — a quality word that crossed over to color in the late seventeenth century. Bold describes a color that asserts itself: high saturation combined with mid lightness, where the hue presents itself without compromise. Sits at the center of the bold-bucket grid, near strong and rich. Closer to a presence word than a pigment word.

Shine
modifier

Old English scīnan, to-shine. As a color modifier, shine implies a polished-and-reflective-light quality, the visual register of polished-silver-and-bronze-shine hand-polished-and-buffed silver-and-bronze-and-brass-and-tin polished-and-reflective-shine surfaces under polished-silver-and-bronze-shine workshop-light. Sits at the modifier-and-texture end of the grid, parallel to gloss and sleek in usage.

Royal
noun

The blue of European royal court dress and regalia from the late seventeenth century forward — the color of British peers' robes, French royal sashes, the lining of the crown-jewel cases. The color refers to a saturated, slightly violet-shifted blue with the matte finish of velvet or melton wool dyed to maximum intensity: deeper than cornflower, warmer than ultramarine, with the heraldic weight of a color reserved for monarchs and the official Crown.

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.

#255fdc
Original
#0070e0
Protanopia
#0060da
Deuteranopia
#007f94
Tritanopia
#5c5c5c
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
5.60:1
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
3.75:1

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
##255FDC
Display P3
Display P3
color(display-p3 0.2076 0.3676 0.8324)
P3 has visible headroomOKLCH chroma 0.201

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

Related Colors

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