#0F232B
Closest named color: Dark (#1B2431). oklch(24.3% 0.03 226.1), rgb(15, 35, 43).
Aa
White text reads best on this color (16.20:1).
About this color
#0F232B is a very dark, muted teal or cyan. In OKLCH its lightness is 24%, its chroma 0.030 and its hue 226°. 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 16.20:1.
| Hue family | Teals and cyans |
| Lightness | very dark (24%) |
| Chroma | muted (0.030) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.29:1 |
| White text | 16.20:1 |
Values
| HEX | #0F232B |
| RGB | rgb(15, 35, 43) |
| HSL | hsl(197, 48%, 11%) |
| OKLCH | oklch(24.3% 0.03 226.1) |
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 #0F232B | 16.20:1 | AAA | Lc -105.6 | Preferred for body text |
| Black text on #0F232B | 1.29:1 | Fails | Lc 0.0 | Not readable |
| #0F232B text on white | 16.20:1 | AAA | Lc 103.1 | Preferred for body text |
| #0F232B 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBEF
oklch(93.5% 0.01 228.9)
-
Step 200
200
#CCDCE3
oklch(88.5% 0.02 225.7)
-
Step 300
300
#A9C6D2
oklch(80.9% 0.036 224.7)
-
Step 400
400
#7AA8BC
oklch(70.6% 0.057 226.7)
-
Step 500
500
#5693AB
oklch(63.1% 0.073 225.4)
-
Step 600
600
#397D97
oklch(55.7% 0.079 226)
-
Step 700
700
#2B6981
oklch(49.1% 0.074 226.8)
-
Step 800
800
#255669
oklch(42.8% 0.061 226.4)
-
Step 900
900
#234755
oklch(37.7% 0.048 225.6)
-
Step 950
950 (this color)
#0F232B
oklch(24.3% 0.03 226.1)
#0F232B 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) | #1F222B | 0.023 |
| Deuteranopia (no green cones) | #1B1F2B | 0.021 |
| Tritanopia (no blue cones) | #012526 | 0.020 |
| Achromatopsia (no color) | #202020 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0F232B
#0F232B
oklch(24.3% 0.03 226.1)
- #2C1C14
#2C1C14
oklch(24.4% 0.029 47.5)
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 #0F232B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.022
- Jet #212529 ΔE 0.029
- Rich Black #0D1B2A ΔE 0.030
- Oxford Blue #1B263B ΔE 0.036
- Space Cadet #2B2D42 ΔE 0.069
- Gunmetal #293241 ΔE 0.074
- Rich Navy #001219 ΔE 0.074
- Dark Brown #341C02 ΔE 0.084
Use #0F232B 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.