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Tartarean Trafalgar

#1b2e90
Notes

Tartarean Trafalgar (#1B2E90) 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 (230°, 68%, 34%) 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
#1b2e90
RGB
rgb(27, 46, 144)
HSL
hsl(230, 68%, 34%)
HWB
hwb(230 11% 44%)
OKLCH
oklch(36.0% 0.162 268.0)
P3
color(display-p3 0.1224 0.1784 0.5431)
HSV
hsv(230, 81%, 56%)
LAB
lab(24.32% 30.26 -55.90)
LCH
lch(24.32% 63.56 298.43)
CMYK
cmyk(81%, 68%, 0%, 44%)

Etymology

Tartarean
adjective

Greek Tartárean, of Tartarus — adjectival form of Tartarus, the deepest pit beneath Hades. As a color modifier, tartarean implies a literary-classical-deep-darkness quality, parallel to Stygian and Cimmerian in poetic register. Sits at the deepest end of the grid, with classical-literary connotations.

Trafalgar
noun

The Cape Trafalgar headland off southern Spain — site of the 1805 Battle of Trafalgar (Nelson's decisive naval victory over Napoleon's fleet). Trafalgar color refers to the deep blue of HMS Victory's preserved hull paint at Portsmouth: a saturated, slightly cool deep blue with the matte finish of period-correct marine paint.

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.

#1b2e90
Original
#003f93
Protanopia
#00348e
Deuteranopia
#00495b
Tritanopia
#313131
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
11.41:1
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
1.84:1

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
##1B2E90
Display P3
Display P3
color(display-p3 0.1224 0.1784 0.5431)
P3 has subtle headroomOKLCH chroma 0.162

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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