#0F2239
Closest named color: Oxford Blue (#1B263B). oklch(24.9% 0.051 254.3), rgb(15, 34, 57).
Aa
White text reads best on this color (16.05:1).
About this color
#0F2239 is a very dark, muted blue. In OKLCH its lightness is 25%, its chroma 0.051 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.023 away. White text reads best on it, at 16.05:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | muted (0.051) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.30:1 |
| White text | 16.05:1 |
Values
| HEX | #0F2239 |
| RGB | rgb(15, 34, 57) |
| HSL | hsl(213, 58%, 14%) |
| OKLCH | oklch(24.9% 0.051 254.3) |
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 #0F2239 | 16.05:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #0F2239 | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #0F2239 text on white | 16.05:1 | AAA | Lc 102.9 | Preferred for body text |
| #0F2239 text on black | 1.30:1 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A7C3E7
oklch(80.9% 0.06 254.8)
-
Step 400
400
#77A4DC
oklch(70.8% 0.096 254.3)
-
Step 500
500
#528CD2
oklch(63.2% 0.123 254.2)
-
Step 600
600
#3574BF
oklch(55.5% 0.134 254.5)
-
Step 700
700
#2761A5
oklch(49% 0.125 254.5)
-
Step 800
800
#225086
oklch(42.8% 0.103 254.3)
-
Step 900
900
#21436B
oklch(37.8% 0.08 253.9)
-
Step 950
950 (this color)
#0F2239
oklch(24.9% 0.051 254.3)
#0F2239 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) | #18233A | 0.013 |
| Deuteranopia (no green cones) | #121F39 | 0.010 |
| Tritanopia (no blue cones) | #00272A | 0.041 |
| Achromatopsia (no color) | #212121 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F2239
#0F2239
oklch(24.9% 0.051 254.3)
- #2F1D01
#2F1D01
oklch(24.8% 0.051 75.2)
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 #0F2239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.023
- Dark #1B2431 ΔE 0.025
- Rich Black #0D1B2A ΔE 0.035
- Jet #212529 ΔE 0.043
- Space Cadet #2B2D42 ΔE 0.061
- Navy Blue #001146 ΔE 0.065
- Gunmetal #293241 ΔE 0.070
- Marine #042E60 ΔE 0.076
Use #0F2239 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.