#10122D
Closest named color: Rich Black (#0D1B2A). oklch(19.8% 0.053 277.1), rgb(16, 18, 45).
Aa
White text reads best on this color (18.31:1).
About this color
#10122D is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.053 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.033 away. White text reads best on it, at 18.31:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.31:1 |
Values
| HEX | #10122D |
| RGB | rgb(16, 18, 45) |
| HSL | hsl(236, 48%, 12%) |
| OKLCH | oklch(19.8% 0.053 277.1) |
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 #10122D | 18.31:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #10122D | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #10122D text on white | 18.31:1 | AAA | Lc 104.9 | Preferred for body text |
| #10122D 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
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F6
oklch(93.6% 0.018 275.6)
-
Step 200
200
#D3D8F1
oklch(88.6% 0.035 276.7)
-
Step 300
300
#B6BEEA
oklch(81% 0.063 276.8)
-
Step 400
400
#919BDF
oklch(70.8% 0.1 277.1)
-
Step 500
500
#7780D6
oklch(63% 0.129 277.5)
-
Step 600
600
#6068C4
oklch(55.6% 0.141 277)
-
Step 700
700
#5056A9
oklch(49.1% 0.131 277.3)
-
Step 800
800
#414789
oklch(42.7% 0.108 276.9)
-
Step 900
900
#373C6E
oklch(37.7% 0.085 277.2)
-
Step 950
950 (this color)
#10122D
oklch(19.8% 0.053 277.1)
#10122D 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) | #06162E | 0.018 |
| Deuteranopia (no green cones) | #04142C | 0.019 |
| Tritanopia (no blue cones) | #04181D | 0.047 |
| Achromatopsia (no color) | #151515 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #10122D
#10122D
oklch(19.8% 0.053 277.1)
- #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 #10122D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.033
- Rich Navy #001219 ΔE 0.052
- Navy Blue #001146 ΔE 0.054
- Dark Navy #000435 ΔE 0.059
- Midnight #03012D ΔE 0.066
- Dark #1B2431 ΔE 0.067
- Dark Navy Blue #00022E ΔE 0.067
- Midnight Purple #280137 ΔE 0.068
Use #10122D 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.