#0B242E
Closest named color: Dark (#1B2431). oklch(24.6% 0.036 227.3), rgb(11, 36, 46).
Aa
White text reads best on this color (16.07:1).
About this color
#0B242E is a very dark, muted teal or cyan. In OKLCH its lightness is 25%, its chroma 0.036 and its hue 227°. 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 16.07:1.
| Hue family | Teals and cyans |
| Lightness | very dark (25%) |
| Chroma | muted (0.036) |
| Temperature | cool |
| Nearest name | Dark (#1B2431) |
| Black text | 1.30:1 |
| White text | 16.07:1 |
Values
| HEX | #0B242E |
| RGB | rgb(11, 36, 46) |
| HSL | hsl(197, 61%, 11%) |
| OKLCH | oklch(24.6% 0.036 227.3) |
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 #0B242E | 16.07:1 | AAA | Lc -105.5 | Preferred for body text |
| Black text on #0B242E | 1.30:1 | Fails | Lc 0.0 | Not readable |
| #0B242E text on white | 16.07:1 | AAA | Lc 102.9 | Preferred for body text |
| #0B242E 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A5C7D6
oklch(81% 0.042 226.4)
-
Step 400
400
#72AAC2
oklch(70.8% 0.068 226.8)
-
Step 500
500
#4994B3
oklch(63.1% 0.088 227.6)
-
Step 600
600
#257E9E
oklch(55.6% 0.095 226.8)
-
Step 700
700
#166A87
oklch(49.1% 0.088 227)
-
Step 800
800
#17576E
oklch(42.8% 0.073 226.8)
-
Step 900
900
#1B4759
oklch(37.6% 0.057 228.1)
-
Step 950
950 (this color)
#0B242E
oklch(24.6% 0.036 227.3)
#0B242E 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) | #1F232F | 0.027 |
| Deuteranopia (no green cones) | #1A202E | 0.023 |
| Tritanopia (no blue cones) | #002727 | 0.023 |
| Achromatopsia (no color) | #212121 | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B242E
#0B242E
oklch(24.6% 0.036 227.3)
- #2F1B11
#2F1B11
oklch(24.6% 0.037 47.1)
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 #0B242E, 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 0.032
- Rich Black #0D1B2A ΔE 0.032
- Oxford Blue #1B263B ΔE 0.034
- Space Cadet #2B2D42 ΔE 0.067
- Gunmetal #293241 ΔE 0.072
- Rich Navy #001219 ΔE 0.077
- Navy Blue #001146 ΔE 0.084
Use #0B242E 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.