#0D1F42
Closest named color: Oxford Blue (#1B263B). oklch(24.7% 0.071 262.1), rgb(13, 31, 66).
Aa
White text reads best on this color (16.25:1).
About this color
#0D1F42 is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.071 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.036 away. White text reads best on it, at 16.25:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.25:1 |
Values
| HEX | #0D1F42 |
| RGB | rgb(13, 31, 66) |
| HSL | hsl(220, 67%, 15%) |
| OKLCH | oklch(24.7% 0.071 262.1) |
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 #0D1F42 | 16.25:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #0D1F42 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #0D1F42 text on white | 16.25:1 | AAA | Lc 103.0 | Preferred for body text |
| #0D1F42 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
#F1F6FD
oklch(97.1% 0.011 256.7)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAF9
oklch(88.5% 0.047 262.5)
-
Step 300
300
#A3C1F7
oklch(80.8% 0.084 262)
-
Step 400
400
#729FF4
oklch(70.7% 0.134 262.3)
-
Step 500
500
#4D85EF
oklch(63.1% 0.17 261.8)
-
Step 600
600
#316BDE
oklch(55.5% 0.186 262.1)
-
Step 700
700
#2459C1
oklch(49.2% 0.173 262)
-
Step 800
800
#1F499C
oklch(42.7% 0.144 262.1)
-
Step 900
900
#1F3E7C
oklch(37.7% 0.112 262.4)
-
Step 950
950 (this color)
#0D1F42
oklch(24.7% 0.071 262.1)
#0D1F42 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) | #0D2343 | 0.013 |
| Deuteranopia (no green cones) | #031E41 | 0.012 |
| Tritanopia (no blue cones) | #00272D | 0.056 |
| Achromatopsia (no color) | #202020 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0D1F42
#0D1F42
oklch(24.7% 0.071 262.1)
- #2D1E00
#2D1E00
oklch(24.7% 0.051 81.9)
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 #0D1F42, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.036
- Dark #1B2431 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.046
- Navy Blue #001146 ΔE 0.048
- Jet #212529 ΔE 0.063
- Dark Indigo #1F0954 ΔE 0.064
- Marine #042E60 ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.069
Use #0D1F42 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.