#101424
Closest named color: Rich Black (#0D1B2A). oklch(19.6% 0.033 272.4), rgb(16, 20, 36).
Aa
White text reads best on this color (18.29:1).
About this color
#101424 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.033 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.025 away. White text reads best on it, at 18.29:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.033) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.29:1 |
Values
| HEX | #101424 |
| RGB | rgb(16, 20, 36) |
| HSL | hsl(228, 38%, 10%) |
| OKLCH | oklch(19.6% 0.033 272.4) |
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 #101424 | 18.29:1 | AAA | Lc -107.1 | Preferred for body text |
| Black text on #101424 | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #101424 text on white | 18.29:1 | AAA | Lc 104.9 | Preferred for body text |
| #101424 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E7EAF2
oklch(93.7% 0.011 269.5)
-
Step 200
200
#D4D9E8
oklch(88.6% 0.021 271.2)
-
Step 300
300
#B8C0DB
oklch(81% 0.039 272.4)
-
Step 400
400
#939FC8
oklch(70.8% 0.062 272)
-
Step 500
500
#7987BA
oklch(63.2% 0.079 272.2)
-
Step 600
600
#6270A6
oklch(55.6% 0.086 272.3)
-
Step 700
700
#515D8F
oklch(49% 0.082 272.8)
-
Step 800
800
#424C74
oklch(42.6% 0.068 272.5)
-
Step 900
900
#38405D
oklch(37.7% 0.051 271.9)
-
Step 950
950 (this color)
#101424
oklch(19.6% 0.033 272.4)
#101424 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) | #0E1625 | 0.007 |
| Deuteranopia (no green cones) | #0D1424 | 0.005 |
| Tritanopia (no blue cones) | #09171A | 0.029 |
| Achromatopsia (no color) | #151515 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101424
#101424
oklch(19.6% 0.033 272.4)
- #1A1503
#1A1503
oklch(19.7% 0.034 95.3)
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 #101424, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.025
- Rich Navy #001219 ΔE 0.038
- Almost Black #070D0D ΔE 0.054
- Dark #1B2431 ΔE 0.063
- Jet #212529 ΔE 0.071
- Navy Blue #001146 ΔE 0.071
- Dark Navy #000435 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.074
Use #101424 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.