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Inky Akāsh

#1d338d
Notes

Inky Akāsh (#1D338D) 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 (228°, 66%, 33%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#1d338d
RGB
rgb(29, 51, 141)
HSL
hsl(228, 66%, 33%)
HWB
hwb(228 11% 45%)
OKLCH
oklch(36.7% 0.151 267.5)
P3
color(display-p3 0.1333 0.1978 0.5323)
HSV
hsv(228, 79%, 55%)
LAB
lab(25.42% 25.92 -52.24)
LCH
lch(25.42% 58.32 296.39)
CMYK
cmyk(79%, 64%, 0%, 45%)

Etymology

Inky
adjective

An adjectival form of ink, used as a color modifier since the eighteenth century to suggest the deep saturated black of fresh writing ink seen against white paper. Less about literal blackness than about the optical density of a fluid that absorbs light through its full thickness. Used at the dark end of any saturated hue: an inky blue is a deep saturated blue with the optical depth of pigment in solution.

Akāsh
noun

The Sanskrit and Hindi word for sky or space — used in classical Indian philosophy as one of the five elements (pancha mahābhūta). Akāsh-bhūta names the elemental sky-blue in Vedic cosmology. The color refers to a North Indian summer sky at midday: a saturated, slightly cool deep blue with the optical brightness of subtropical atmospheric scatter.

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.

#1d338d
Original
#004290
Protanopia
#00378b
Deuteranopia
#004a5b
Tritanopia
#353535
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
10.99:1
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
1.91:1

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
##1D338D
Display P3
Display P3
color(display-p3 0.1333 0.1978 0.5323)
P3 has subtle headroomOKLCH chroma 0.151

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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