#0B313E
Closest named color: Gunmetal (#293241). oklch(29.4% 0.048 225), rgb(11, 49, 62).
Aa
White text reads best on this color (13.78:1).
About this color
#0B313E is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.048 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.036 away. White text reads best on it, at 13.78:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.048) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.52:1 |
| White text | 13.78:1 |
Values
| HEX | #0B313E |
| RGB | rgb(11, 49, 62) |
| HSL | hsl(195, 70%, 14%) |
| OKLCH | oklch(29.4% 0.048 225) |
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 #0B313E | 13.78:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #0B313E | 1.52:1 | Fails | Lc 0.0 | Not readable |
| #0B313E text on white | 13.78:1 | AAA | Lc 100.2 | Preferred for body text |
| #0B313E text on black | 1.52:1 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DFECF2
oklch(93.5% 0.016 227)
-
Step 200
200
#C4DEE9
oklch(88.5% 0.032 225.1)
-
Step 300
300
#9AC9DC
oklch(80.9% 0.056 224.7)
-
Step 400
400
#5CADCB
oklch(70.8% 0.09 224.5)
-
Step 500
500
#1797BE
oklch(63.1% 0.115 225.5)
-
Step 600
600
#007FA1
oklch(55.5% 0.105 225)
-
Step 700
700
#006B88
oklch(49.1% 0.093 224.9)
-
Step 800
800
#005870
oklch(42.8% 0.081 224.4)
-
Step 900
900
#00495E
oklch(37.7% 0.071 225)
-
Step 950
950 (this color)
#0B313E
oklch(29.4% 0.048 225)
#0B313E 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) | #2A303F | 0.037 |
| Deuteranopia (no green cones) | #232B3E | 0.032 |
| Tritanopia (no blue cones) | #003535 | 0.026 |
| Achromatopsia (no color) | #2D2D2D | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B313E
#0B313E
oklch(29.4% 0.048 225)
- #402418
#402418
oklch(29.4% 0.048 43.7)
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 #0B313E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.036
- Midnight Green #073B4C ΔE 0.037
- Oxford Blue #1B263B ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.042
- Dark #1B2431 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.047
- Jet #212529 ΔE 0.050
- Prussian Blue #1D3557 ΔE 0.051
Use #0B313E 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.