#0F1F44
Closest named color: Oxford Blue (#1B263B). oklch(24.9% 0.073 264.2), rgb(15, 31, 68).
Aa
White text reads best on this color (16.15:1).
About this color
#0F1F44 is a very dark, moderately saturated blue. In OKLCH its lightness is 25%, its chroma 0.073 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Oxford Blue (#1B263B), ΔE 0.037 away. White text reads best on it, at 16.15:1.
| Hue family | Blues |
| Lightness | very dark (25%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Oxford Blue (#1B263B) |
| Black text | 1.29:1 |
| White text | 16.15:1 |
Values
| HEX | #0F1F44 |
| RGB | rgb(15, 31, 68) |
| HSL | hsl(222, 64%, 16%) |
| OKLCH | oklch(24.9% 0.073 264.2) |
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 #0F1F44 | 16.15:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #0F1F44 | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #0F1F44 text on white | 16.15:1 | AAA | Lc 102.9 | Preferred for body text |
| #0F1F44 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
#F1F6FE
oklch(97.2% 0.012 259.8)
-
Step 100
100
#E1EAFB
oklch(93.5% 0.025 263.3)
-
Step 200
200
#C9DAFA
oklch(88.6% 0.048 263.1)
-
Step 300
300
#A5C0F9
oklch(80.8% 0.086 264.8)
-
Step 400
400
#749EF7
oklch(70.7% 0.139 264)
-
Step 500
500
#5183F3
oklch(63.2% 0.176 264)
-
Step 600
600
#3769E2
oklch(55.6% 0.192 264.1)
-
Step 700
700
#2A56C4
oklch(49% 0.179 264.3)
-
Step 800
800
#24479F
oklch(42.7% 0.149 264.5)
-
Step 900
900
#213D7E
oklch(37.7% 0.115 264.1)
-
Step 950
950 (this color)
#0F1F44
oklch(24.9% 0.073 264.2)
#0F1F44 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) | #0B2345 | 0.013 |
| Deuteranopia (no green cones) | #011E43 | 0.016 |
| Tritanopia (no blue cones) | #00282E | 0.060 |
| Achromatopsia (no color) | #212121 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F1F44
#0F1F44
oklch(24.9% 0.073 264.2)
- #2D1F00
#2D1F00
oklch(25% 0.051 84.2)
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 #0F1F44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Oxford Blue #1B263B ΔE 0.037
- Dark #1B2431 ΔE 0.046
- Navy Blue #001146 ΔE 0.049
- Rich Black #0D1B2A ΔE 0.050
- Dark Indigo #1F0954 ΔE 0.061
- Marine #042E60 ΔE 0.064
- Jet #212529 ΔE 0.065
- Space Cadet #2B2D42 ΔE 0.067
Use #0F1F44 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.