#0B3133
Closest named color: Jet (#212529). oklch(28.8% 0.042 200.1), rgb(11, 49, 51).
Aa
White text reads best on this color (13.98:1).
About this color
#0B3133 is a dark, muted teal or cyan. In OKLCH its lightness is 29%, its chroma 0.042 and its hue 200°. Its hue sits on the cool side of the wheel. The nearest named color is Jet (#212529), ΔE 0.044 away. White text reads best on it, at 13.98:1.
| Hue family | Teals and cyans |
| Lightness | dark (29%) |
| Chroma | muted (0.042) |
| Temperature | cool |
| Nearest name | Jet (#212529) |
| Black text | 1.50:1 |
| White text | 13.98:1 |
Values
| HEX | #0B3133 |
| RGB | rgb(11, 49, 51) |
| HSL | hsl(183, 65%, 12%) |
| OKLCH | oklch(28.8% 0.042 200.1) |
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 #0B3133 | 13.98:1 | AAA | Lc -103.5 | Preferred for body text |
| Black text on #0B3133 | 1.50:1 | Fails | Lc 0.0 | Not readable |
| #0B3133 text on white | 13.98:1 | AAA | Lc 100.5 | Preferred for body text |
| #0B3133 text on black | 1.50:1 | 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
#F1F7F7
oklch(97.2% 0.006 197.1)
-
Step 100
100
#E0EDEE
oklch(93.7% 0.014 202.5)
-
Step 200
200
#C5DFE0
oklch(88.5% 0.028 199.5)
-
Step 300
300
#9CCBCD
oklch(81% 0.049 199.5)
-
Step 400
400
#5FB0B4
oklch(70.8% 0.08 199.7)
-
Step 500
500
#1F9BA2
oklch(63% 0.101 200.9)
-
Step 600
600
#008489
oklch(55.7% 0.095 199.5)
-
Step 700
700
#006F73
oklch(49.2% 0.084 199.2)
-
Step 800
800
#005B5F
oklch(42.8% 0.073 200)
-
Step 900
900
#004C4F
oklch(37.8% 0.064 199.4)
-
Step 950
950 (this color)
#0B3133
oklch(28.8% 0.042 200.1)
#0B3133 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) | #2D2E33 | 0.043 |
| Deuteranopia (no green cones) | #272A33 | 0.040 |
| Tritanopia (no blue cones) | #003332 | 0.010 |
| Achromatopsia (no color) | #2C2C2C | 0.042 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B3133
#0B3133
oklch(28.8% 0.042 200.1)
- #3D2222
#3D2222
oklch(28.7% 0.042 19.9)
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 #0B3133, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.044
- Gunmetal #293241 ΔE 0.046
- Dark #1B2431 ΔE 0.047
- Oxford Blue #1B263B ΔE 0.048
- Midnight Green #073B4C ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.054
- Dark Blue Grey #1F3B4D ΔE 0.059
- Pakistan Green #283618 ΔE 0.060
Use #0B3133 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.