#101329
Closest named color: Rich Black (#0D1B2A). oklch(19.7% 0.044 275.7), rgb(16, 19, 41).
Aa
White text reads best on this color (18.30:1).
About this color
#101329 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.044 and its hue 276°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.028 away. White text reads best on it, at 18.30:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.044) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.30:1 |
Values
| HEX | #101329 |
| RGB | rgb(16, 19, 41) |
| HSL | hsl(233, 44%, 11%) |
| OKLCH | oklch(19.7% 0.044 275.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #101329 | 18.30:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #101329 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #101329 text on white | 18.30:1 | AAA | Lc 104.9 | Preferred for body text |
| #101329 text on black | 1.14:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D3D8ED
oklch(88.5% 0.029 275.1)
-
Step 300
300
#B7BEE3
oklch(80.8% 0.053 276.7)
-
Step 400
400
#929DD5
oklch(70.8% 0.083 275.5)
-
Step 500
500
#7883CA
oklch(63.1% 0.108 276.2)
-
Step 600
600
#616CB7
oklch(55.7% 0.117 275.6)
-
Step 700
700
#505A9D
oklch(49.1% 0.107 275.3)
-
Step 800
800
#424A7F
oklch(42.8% 0.088 275.5)
-
Step 900
900
#373E66
oklch(37.7% 0.069 275.1)
-
Step 950
950 (this color)
#101329
oklch(19.7% 0.044 275.7)
#101329 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #0A162A | 0.013 |
| Deuteranopia (no green cones) | #081429 | 0.012 |
| Tritanopia (no blue cones) | #07181B | 0.041 |
| Achromatopsia (no color) | #151515 | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101329
#101329
oklch(19.7% 0.044 275.7)
- #1B1500
#1B1500
oklch(19.7% 0.041 95.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #101329, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.028
- Rich Navy #001219 ΔE 0.045
- Navy Blue #001146 ΔE 0.061
- Almost Black #070D0D ΔE 0.062
- Dark #1B2431 ΔE 0.064
- Dark Navy #000435 ΔE 0.065
- Midnight #03012D ΔE 0.070
- Dark Navy Blue #00022E ΔE 0.072
Use #101329 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.