#0D2233
Closest named color: Dark (#1B2431). oklch(24.4% 0.042 245.2), rgb(13, 34, 51).
Aa
White text reads best on this color (16.23:1).
About this color
#0D2233 is a very dark, muted blue. In OKLCH its lightness is 24%, its chroma 0.042 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.021 away. White text reads best on it, at 16.23:1.
| Hue family | Blues |
| Lightness | very dark (24%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.29:1 |
| White text | 16.23:1 |
Values
| HEX | #0D2233 |
| RGB | rgb(13, 34, 51) |
| HSL | hsl(207, 59%, 13%) |
| OKLCH | oklch(24.4% 0.042 245.2) |
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 #0D2233 | 16.23:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #0D2233 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #0D2233 text on white | 16.23:1 | AAA | Lc 103.1 | Preferred for body text |
| #0D2233 text on black | 1.29:1 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E2EBF3
oklch(93.6% 0.015 244.7)
-
Step 200
200
#CBDCEB
oklch(88.6% 0.028 244.7)
-
Step 300
300
#A6C5E0
oklch(81% 0.051 244.8)
-
Step 400
400
#76A6D0
oklch(70.7% 0.08 245.7)
-
Step 500
500
#508FC3
oklch(63% 0.102 245.3)
-
Step 600
600
#3179B0
oklch(55.7% 0.111 245)
-
Step 700
700
#236597
oklch(49% 0.104 245.4)
-
Step 800
800
#1F537B
oklch(42.7% 0.086 245.2)
-
Step 900
900
#204563
oklch(37.8% 0.067 245.4)
-
Step 950
950 (this color)
#0D2233
oklch(24.4% 0.042 245.2)
#0D2233 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) | #1B2234 | 0.019 |
| Deuteranopia (no green cones) | #151F33 | 0.014 |
| Tritanopia (no blue cones) | #002628 | 0.032 |
| Achromatopsia (no color) | #202020 | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D2233
#0D2233
oklch(24.4% 0.042 245.2)
- #2E1C08
#2E1C08
oklch(24.5% 0.043 66.4)
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 #0D2233, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.021
- Rich Black #0D1B2A ΔE 0.027
- Oxford Blue #1B263B ΔE 0.028
- Jet #212529 ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.066
- Navy Blue #001146 ΔE 0.071
- Gunmetal #293241 ΔE 0.073
- Rich Navy #001219 ΔE 0.077
Use #0D2233 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.