#101C29
Closest named color: Rich Black (#0D1B2A). oklch(22.2% 0.031 251.2), rgb(16, 28, 41).
Aa
White text reads best on this color (17.21:1).
About this color
#101C29 is a very dark, muted blue. In OKLCH its lightness is 22%, its chroma 0.031 and its hue 251°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.006 away. White text reads best on it, at 17.21:1.
| Hue family | Blues |
| Lightness | very dark (22%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.22:1 |
| White text | 17.21:1 |
Values
| HEX | #101C29 |
| RGB | rgb(16, 28, 41) |
| HSL | hsl(211, 44%, 11%) |
| OKLCH | oklch(22.2% 0.031 251.2) |
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 #101C29 | 17.21:1 | AAA | Lc -106.4 | Preferred for body text |
| Black text on #101C29 | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #101C29 text on white | 17.21:1 | AAA | Lc 104.1 | Preferred for body text |
| #101C29 text on black | 1.22:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF1
oklch(93.5% 0.011 256.7)
-
Step 200
200
#D0DAE6
oklch(88.4% 0.02 252.9)
-
Step 300
300
#B0C3D8
oklch(80.9% 0.036 250.9)
-
Step 400
400
#86A4C4
oklch(70.8% 0.058 250.3)
-
Step 500
500
#678DB6
oklch(63.1% 0.075 250.9)
-
Step 600
600
#4E76A1
oklch(55.5% 0.081 251.1)
-
Step 700
700
#3F638A
oklch(49% 0.075 251.4)
-
Step 800
800
#345170
oklch(42.6% 0.062 251)
-
Step 900
900
#2E435B
oklch(37.6% 0.049 252.4)
-
Step 950
950 (this color)
#101C29
oklch(22.2% 0.031 251.2)
#101C29 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) | #171C2A | 0.011 |
| Deuteranopia (no green cones) | #141A29 | 0.009 |
| Tritanopia (no blue cones) | #051F20 | 0.028 |
| Achromatopsia (no color) | #1B1B1B | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101C29
#101C29
oklch(22.2% 0.031 251.2)
- #24190A
#24190A
oklch(22.3% 0.031 73.6)
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 #101C29, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.006
- Dark #1B2431 ΔE 0.036
- Jet #212529 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.049
- Rich Navy #001219 ΔE 0.055
- Navy Blue #001146 ΔE 0.073
- Almost Black #070D0D ΔE 0.074
- Space Cadet #2B2D42 ΔE 0.085
Use #101C29 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.