#0D2337
Closest named color: Dark (#1B2431). oklch(24.9% 0.047 248.3), rgb(13, 35, 55).
Aa
White text reads best on this color (15.99:1).
About this color
#0D2337 is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.047 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Dark (#1B2431), ΔE 0.022 away. White text reads best on it, at 15.99:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.047) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.31:1 |
| White text | 15.99:1 |
Values
| HEX | #0D2337 |
| RGB | rgb(13, 35, 55) |
| HSL | hsl(209, 62%, 13%) |
| OKLCH | oklch(24.9% 0.047 248.3) |
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 #0D2337 | 15.99:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #0D2337 | 1.31:1 | Fails | Lc 0.0 | Not readable |
| #0D2337 text on white | 15.99:1 | AAA | Lc 102.8 | Preferred for body text |
| #0D2337 text on black | 1.31:1 | 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
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CADBED
oklch(88.4% 0.031 249.7)
-
Step 300
300
#A5C4E4
oklch(80.8% 0.056 249.4)
-
Step 400
400
#73A6D6
oklch(70.8% 0.089 247.7)
-
Step 500
500
#4C8ECB
oklch(63% 0.115 248.4)
-
Step 600
600
#2C77B8
oklch(55.5% 0.125 248.5)
-
Step 700
700
#1E649F
oklch(49.1% 0.116 248.6)
-
Step 800
800
#1B5281
oklch(42.7% 0.097 248.3)
-
Step 900
900
#1D4467
oklch(37.6% 0.075 248.2)
-
Step 950
950 (this color)
#0D2337
oklch(24.9% 0.047 248.3)
#0D2337 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) | #1A2438 | 0.018 |
| Deuteranopia (no green cones) | #142037 | 0.012 |
| Tritanopia (no blue cones) | #00282A | 0.037 |
| Achromatopsia (no color) | #222222 | 0.047 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D2337
#0D2337
oklch(24.9% 0.047 248.3)
- #301D05
#301D05
oklch(25% 0.047 69.4)
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 #0D2337, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.022
- Oxford Blue #1B263B ΔE 0.023
- Rich Black #0D1B2A ΔE 0.034
- Jet #212529 ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.061
- Gunmetal #293241 ΔE 0.069
- Navy Blue #001146 ΔE 0.070
- Marine #042E60 ΔE 0.078
Use #0D2337 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.