#2B5B60
Closest named color: Petrol (#005F6A). oklch(44% 0.053 204.4), rgb(43, 91, 96).
Aa
White text reads best on this color (7.58:1).
About this color
#2B5B60 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.053 and its hue 204°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.025 away. White text reads best on it, at 7.58:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.76:1 |
| White text | 7.58:1 |
Values
| HEX | #2B5B60 |
| RGB | rgb(43, 91, 96) |
| HSL | hsl(186, 38%, 27%) |
| OKLCH | oklch(44% 0.053 204.4) |
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 #2B5B60 | 7.58:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #2B5B60 | 2.76:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #2B5B60 text on white | 7.58:1 | AAA | Lc 86.2 | Fine for body text |
| #2B5B60 text on black | 2.76:1 | Fails | Lc -15.8 | Dividers and decoration only |
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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CDDDDE
oklch(88.6% 0.017 201.4)
-
Step 300
300
#ABC7CA
oklch(81% 0.03 204.5)
-
Step 400
400
#7CAAAF
oklch(70.7% 0.05 204.5)
-
Step 500
500
#59959B
oklch(63.1% 0.063 203.9)
-
Step 600
600
#3C7F86
oklch(55.6% 0.069 204.5)
-
Step 700
700
#2E6B71
oklch(49% 0.063 204.1)
-
Step 800
800 (this color)
#2B5B60
oklch(44% 0.053 204.4)
-
Step 900
900
#25484C
oklch(37.7% 0.041 205.1)
-
Step 950
950
#162A2C
oklch(26.9% 0.026 203.9)
#2B5B60 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) | #555860 | 0.053 |
| Deuteranopia (no green cones) | #4C5160 | 0.049 |
| Tritanopia (no blue cones) | #055E5C | 0.025 |
| Achromatopsia (no color) | #545454 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B5B60
#2B5B60
oklch(44% 0.053 204.4)
- #6D4744
#6D4744
oklch(44% 0.053 24.4)
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 #2B5B60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.025
- Dark Green Blue #1F6357 ΔE 0.035
- Deep Teal #00555A ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.040
- Dark Aqua #05696B ΔE 0.043
- YInMn Blue #415A77 ΔE 0.049
- Dark Blue Green #005249 ΔE 0.055
- Dark Teal #014D4E ΔE 0.061
Use #2B5B60 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.