#0B4251
Closest named color: Midnight Green (#073B4C). oklch(35.3% 0.059 221.1), rgb(11, 66, 81).
Aa
White text reads best on this color (10.98:1).
About this color
#0B4251 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.059 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Green (#073B4C), ΔE 0.024 away. White text reads best on it, at 10.98:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.059) |
| Temperature | cool |
| Nearest name | Midnight Green (#073B4C) |
| Black text | 1.91:1 |
| White text | 10.98:1 |
Values
| HEX | #0B4251 |
| RGB | rgb(11, 66, 81) |
| HSL | hsl(193, 76%, 18%) |
| OKLCH | oklch(35.3% 0.059 221.1) |
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 #0B4251 | 10.98:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #0B4251 | 1.91:1 | Fails | Lc 8.8 | Not readable |
| #0B4251 text on white | 10.98:1 | AAA | Lc 95.1 | Preferred for body text |
| #0B4251 text on black | 1.91:1 | Fails | Lc -7.5 | 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 900.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C8DDE5
oklch(88.4% 0.025 222.6)
-
Step 300
300
#A2C8D5
oklch(81% 0.044 220.7)
-
Step 400
400
#6CABC0
oklch(70.6% 0.072 221.2)
-
Step 500
500
#3F96B0
oklch(63.1% 0.091 220.8)
-
Step 600
600
#0F809C
oklch(55.6% 0.099 221)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#07586C
oklch(42.7% 0.076 220.9)
-
Step 900
900 (this color)
#0B4251
oklch(35.3% 0.059 221.1)
-
Step 950
950
#0E2B33
oklch(27.1% 0.037 218.8)
#0B4251 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) | #394052 | 0.048 |
| Deuteranopia (no green cones) | #303951 | 0.044 |
| Tritanopia (no blue cones) | #004747 | 0.029 |
| Achromatopsia (no color) | #3C3C3C | 0.059 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B4251
#0B4251
oklch(35.3% 0.059 221.1)
- #553022
#553022
oklch(35.2% 0.059 41.3)
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 #0B4251, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Green #073B4C ΔE 0.024
- Dark Blue Grey #1F3B4D ΔE 0.025
- Charcoal #264653 ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.035
- Dark Teal #014D4E ΔE 0.039
- Prussian Blue #1D3557 ΔE 0.047
- Onyx #343A40 ΔE 0.048
- Gunmetal #293241 ΔE 0.055
Use #0B4251 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.