#0B5A57
Closest named color: Deep Teal (#00555A). oklch(42.4% 0.07 190.8), rgb(11, 90, 87).
Aa
White text reads best on this color (8.03:1).
About this color
#0B5A57 is a dark, muted teal or cyan. In OKLCH its lightness is 42%, its chroma 0.070 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Teal (#00555A), ΔE 0.020 away. White text reads best on it, at 8.03:1.
| Hue family | Teals and cyans |
| Lightness | dark (42%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Deep Teal (#00555A) |
| Black text | 2.61:1 |
| White text | 8.03:1 |
Values
| HEX | #0B5A57 |
| RGB | rgb(11, 90, 87) |
| HSL | hsl(178, 78%, 20%) |
| OKLCH | oklch(42.4% 0.07 190.8) |
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 #0B5A57 | 8.03:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #0B5A57 | 2.61:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #0B5A57 text on white | 8.03:1 | AAA | Lc 87.4 | Fine for body text |
| #0B5A57 text on black | 2.61:1 | Fails | Lc -14.7 | 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 800.
-
Step 50
50
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E2ECEC
oklch(93.6% 0.011 197)
-
Step 200
200
#C9DEDC
oklch(88.4% 0.023 189.8)
-
Step 300
300
#A3C9C7
oklch(80.8% 0.04 192.4)
-
Step 400
400
#6FAEAA
oklch(70.7% 0.065 190.7)
-
Step 500
500
#439A95
oklch(63.2% 0.084 190.1)
-
Step 600
600
#188480
oklch(55.6% 0.09 191)
-
Step 700
700
#02706C
oklch(49.2% 0.084 190.4)
-
Step 800
800 (this color)
#0B5A57
oklch(42.4% 0.07 190.8)
-
Step 900
900
#174B48
oklch(37.8% 0.054 189.7)
-
Step 950
950
#0F2C2A
oklch(27% 0.035 189.2)
#0B5A57 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) | #545557 | 0.073 |
| Deuteranopia (no green cones) | #494D58 | 0.069 |
| Tritanopia (no blue cones) | #005D59 | 0.009 |
| Achromatopsia (no color) | #505050 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #0B5A57
#0B5A57
oklch(42.4% 0.07 190.8)
- #6F3D45
#6F3D45
oklch(42.4% 0.071 10.3)
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 #0B5A57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Teal #00555A ΔE 0.020
- Petrol #005F6A ΔE 0.031
- Dark Blue Green #005249 ΔE 0.032
- Dark Green Blue #1F6357 ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Teal #014D4E ΔE 0.044
- Dark Aqua #05696B ΔE 0.051
- Spruce #0A5F38 ΔE 0.057
Use #0B5A57 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.