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Stately Outremer

#0b57d9
Notes

Stately Outremer (#0B57D9) is a true azure 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 (218°, 90%, 45%) 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
#0b57d9
RGB
rgb(11, 87, 217)
HSL
hsl(218, 90%, 45%)
HWB
hwb(218 4% 15%)
OKLCH
oklch(50.3% 0.211 261.3)
P3
color(display-p3 0.1503 0.3358 0.8203)
HSV
hsv(218, 95%, 85%)
LAB
lab(41.05% 30.56 -71.82)
LCH
lch(41.05% 78.05 293.05)
CMYK
cmyk(95%, 60%, 0%, 15%)

Etymology

Stately
adjective

An adjectival form of state, condition of dignity. Used as a color modifier since the seventeenth century for the deep saturated jewel tones of formal ceremony — the deep blue of a robes-of-state, the deep red of a state-banquet velvet. Sits in the bold-and-formal corner alongside imperial and royal, with slightly less institutional weight.

Outremer
noun

The French word for ultramarine — literally beyond-the-sea, naming the lapis-lazuli pigment imported from Afghanistan via Mediterranean trade routes. Outremer names the same pigment as English ultramarine but with the French Renaissance-and-after register. The color refers to a freshly mixed outremer pigment in oil: a saturated, slightly violet-shifted deep blue.

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.

#0b57d9
Original
#006add
Protanopia
#0058d7
Deuteranopia
#007990
Tritanopia
#505050
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
6.21:1
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
3.38:1

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
##0B57D9
Display P3
Display P3
color(display-p3 0.1503 0.3358 0.8203)
P3 has visible headroomOKLCH chroma 0.211

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.

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