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Engulfed Aizome

#0a277e
Notes

Engulfed Aizome (#0A277E) is a deep blue with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (225°, 85%, 27%) places it in the highly saturated band at a dark 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
#0a277e
RGB
rgb(10, 39, 126)
HSL
hsl(225, 85%, 27%)
HWB
hwb(225 4% 51%)
OKLCH
oklch(32.2% 0.150 264.5)
P3
color(display-p3 0.0710 0.1505 0.4748)
HSV
hsv(225, 92%, 49%)
LAB
lab(20.13% 26.68 -51.54)
LCH
lch(20.13% 58.04 297.37)
CMYK
cmyk(92%, 69%, 0%, 51%)

Etymology

Engulfed
adjective

Old French en-golfe, into-the-gulf — past-participle of engulf. As a color modifier, engulfed implies the deep-overwhelming-and-cool quality where the hue has been completely surrounded by darkness, like a small boat overtaken by Atlantic-ocean swells. Sits at the deep-and-overwhelmed end of the grid, parallel to submerged and suffocating.

Aizome
noun

The Japanese traditional indigo-dyeing technique — aizome — using Persicaria tinctoria (Japanese indigo) and natural fermentation in clay vats. The dyer is called aishi (indigo master), trained over decades. The color refers to a freshly aizome-dyed cotton: a saturated, slightly cool deep blue with the matte finish of multi-bath natural-indigo dye.

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.

#0a277e
Original
#003681
Protanopia
#002b7c
Deuteranopia
#003f4f
Tritanopia
#272727
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
13.09:1
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
1.60:1

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
##0A277E
Display P3
Display P3
color(display-p3 0.0710 0.1505 0.4748)
P3 has subtle headroomOKLCH chroma 0.150

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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