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Dim Tibet

#1f3a9b
Notes

Dim Tibet (#1F3A9B) is a true 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 (227°, 67%, 36%) 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
#1f3a9b
RGB
rgb(31, 58, 155)
HSL
hsl(227, 67%, 36%)
HWB
hwb(227 12% 39%)
OKLCH
oklch(39.5% 0.161 266.6)
P3
color(display-p3 0.1464 0.2248 0.5854)
HSV
hsv(227, 80%, 61%)
LAB
lab(28.60% 26.82 -55.63)
LCH
lch(28.60% 61.76 295.74)
CMYK
cmyk(80%, 63%, 0%, 39%)

Etymology

Dim
adjective

Old English dim, dark, obscured. As a color modifier, dim implies reduced luminance without specific saturation effect — a dim red is a less luminous version of red rather than a less saturated one. Sits at the value-only end of the deep grid, closer to dark than to plush.

Tibet
noun

The high-altitude plateau of central Asia — and the saturated deep blue of Tibetan prayer-flag (lung-ta) blue panels and the deep blue of Tibetan summer sky at 4,000-meter altitude. Tibet refers to a fresh Tibetan prayer-flag blue panel: a saturated, slightly cool deep blue with the matte finish of cotton-dyed prayer flag.

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.

#1f3a9b
Original
#00499e
Protanopia
#003e99
Deuteranopia
#005365
Tritanopia
#3b3b3b
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
9.83:1
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
2.14:1

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
##1F3A9B
Display P3
Display P3
color(display-p3 0.1464 0.2248 0.5854)
P3 has subtle headroomOKLCH chroma 0.161

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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