#101224
Closest named color: Rich Black (#0D1B2A). oklch(19% 0.036 277.5), rgb(16, 18, 36).
Aa
White text reads best on this color (18.51:1).
About this color
#101224 is a very dark, muted blue. In OKLCH its lightness is 19%, its chroma 0.036 and its hue 278°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.032 away. White text reads best on it, at 18.51:1.
| Hue family | Blues |
| Lightness | very dark (19%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.13:1 |
| White text | 18.51:1 |
Values
| HEX | #101224 |
| RGB | rgb(16, 18, 36) |
| HSL | hsl(234, 38%, 10%) |
| OKLCH | oklch(19% 0.036 277.5) |
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 #101224 | 18.51:1 | AAA | Lc -107.2 | Preferred for body text |
| Black text on #101224 | 1.13:1 | Fails | Lc 0.0 | Not readable |
| #101224 text on white | 18.51:1 | AAA | Lc 105.1 | Preferred for body text |
| #101224 text on black | 1.13:1 | 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
#E7E9F2
oklch(93.5% 0.012 276.1)
-
Step 200
200
#D5D8E9
oklch(88.5% 0.023 277.9)
-
Step 300
300
#B9BFDD
oklch(81% 0.043 276.5)
-
Step 400
400
#969DCC
oklch(70.7% 0.069 277.9)
-
Step 500
500
#7C84BF
oklch(63% 0.089 277.6)
-
Step 600
600
#666DAB
oklch(55.6% 0.096 277.9)
-
Step 700
700
#555B93
oklch(49.1% 0.09 277.9)
-
Step 800
800
#454B77
oklch(42.8% 0.073 276.9)
-
Step 900
900
#3A3E60
oklch(37.6% 0.058 278.1)
-
Step 950
950 (this color)
#101224
oklch(19% 0.036 277.5)
#101224 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) | #0C1425 | 0.009 |
| Deuteranopia (no green cones) | #0A1324 | 0.010 |
| Tritanopia (no blue cones) | #0A1619 | 0.032 |
| Achromatopsia (no color) | #131313 | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #101224
#101224
oklch(19% 0.036 277.5)
- #181401
#181401
oklch(19.1% 0.037 99.3)
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 #101224, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.032
- Rich Navy #001219 ΔE 0.038
- Almost Black #070D0D ΔE 0.053
- Dark Navy #000435 ΔE 0.068
- Dark #1B2431 ΔE 0.069
- Navy Blue #001146 ΔE 0.070
- Midnight #03012D ΔE 0.071
- Dark Navy Blue #00022E ΔE 0.073
Use #101224 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.