#0D122F
Closest named color: Rich Black (#0D1B2A). oklch(19.7% 0.058 272.6), rgb(13, 18, 47).
Aa
White text reads best on this color (18.34:1).
About this color
#0D122F is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.058 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.035 away. White text reads best on it, at 18.34:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.058) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.14:1 |
| White text | 18.34:1 |
Values
| HEX | #0D122F |
| RGB | rgb(13, 18, 47) |
| HSL | hsl(231, 57%, 12%) |
| OKLCH | oklch(19.7% 0.058 272.6) |
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 #0D122F | 18.34:1 | AAA | Lc -107.0 | Preferred for body text |
| Black text on #0D122F | 1.14:1 | Fails | Lc 0.0 | Not readable |
| #0D122F text on white | 18.34:1 | AAA | Lc 104.9 | Preferred for body text |
| #0D122F 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F3
oklch(88.5% 0.038 272.5)
-
Step 300
300
#B1BEEE
oklch(80.8% 0.07 272.9)
-
Step 400
400
#899CE5
oklch(70.7% 0.109 272.2)
-
Step 500
500
#6D81DE
oklch(63% 0.141 272.6)
-
Step 600
600
#5769CB
oklch(55.6% 0.152 272.7)
-
Step 700
700
#4757B0
oklch(49.1% 0.142 272.5)
-
Step 800
800
#3A478E
oklch(42.6% 0.118 272.6)
-
Step 900
900
#323D72
oklch(37.9% 0.091 272.5)
-
Step 950
950 (this color)
#0D122F
oklch(19.7% 0.058 272.6)
#0D122F 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) | #041630 | 0.017 |
| Deuteranopia (no green cones) | #01132E | 0.019 |
| Tritanopia (no blue cones) | #00191E | 0.051 |
| Achromatopsia (no color) | #141414 | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D122F
#0D122F
oklch(19.7% 0.058 272.6)
- #1C1500
#1C1500
oklch(19.9% 0.041 93.2)
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 #0D122F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.035
- Navy Blue #001146 ΔE 0.048
- Rich Navy #001219 ΔE 0.053
- Dark Navy #000435 ΔE 0.054
- Midnight #03012D ΔE 0.062
- Night Blue #040348 ΔE 0.062
- Dark Navy Blue #00022E ΔE 0.063
- Very Dark Blue #000133 ΔE 0.064
Use #0D122F 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.