#0D1233
Closest named color: Rich Black (#0D1B2A). oklch(20% 0.065 272.6), rgb(13, 18, 51).
Aa
White text reads best on this color (18.23:1).
About this color
#0D1233 is a very dark, muted blue. In OKLCH its lightness is 20%, its chroma 0.065 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Rich Black (#0D1B2A), ΔE 0.038 away. White text reads best on it, at 18.23:1.
| Hue family | Blues |
| Lightness | very dark (20%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.15:1 |
| White text | 18.23:1 |
Values
| HEX | #0D1233 |
| RGB | rgb(13, 18, 51) |
| HSL | hsl(232, 59%, 13%) |
| OKLCH | oklch(20% 0.065 272.6) |
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 #0D1233 | 18.23:1 | AAA | Lc -106.9 | Preferred for body text |
| Black text on #0D1233 | 1.15:1 | Fails | Lc 0.0 | Not readable |
| #0D1233 text on white | 18.23:1 | AAA | Lc 104.8 | Preferred for body text |
| #0D1233 text on black | 1.15:1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#CFD8F6
oklch(88.5% 0.042 272.3)
-
Step 300
300
#AFBEF3
oklch(80.9% 0.077 272.3)
-
Step 400
400
#879BED
oklch(70.8% 0.122 272.5)
-
Step 500
500
#6B7FE7
oklch(63% 0.157 272.9)
-
Step 600
600
#5466D6
oklch(55.6% 0.172 272.7)
-
Step 700
700
#4554B9
oklch(49.1% 0.159 272.8)
-
Step 800
800
#384596
oklch(42.6% 0.133 272.6)
-
Step 900
900
#303B77
oklch(37.6% 0.103 272.7)
-
Step 950
950 (this color)
#0D1233
oklch(20% 0.065 272.6)
#0D1233 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) | #011734 | 0.021 |
| Deuteranopia (no green cones) | #001432 | 0.020 |
| Tritanopia (no blue cones) | #001A20 | 0.055 |
| Achromatopsia (no color) | #151515 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D1233
#0D1233
oklch(20% 0.065 272.6)
- #1D1500
#1D1500
oklch(20% 0.041 90.8)
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 #0D1233, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.038
- Navy Blue #001146 ΔE 0.041
- Dark Navy #000435 ΔE 0.052
- Night Blue #040348 ΔE 0.056
- Rich Navy #001219 ΔE 0.060
- Midnight #03012D ΔE 0.063
- Very Dark Blue #000133 ΔE 0.063
- Dark Navy Blue #00022E ΔE 0.064
Use #0D1233 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.