#155D60
Closest named color: Petrol (#005F6A). oklch(43.8% 0.067 199.2), rgb(21, 93, 96).
Aa
White text reads best on this color (7.59:1).
About this color
#155D60 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.067 and its hue 199°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.016 away. White text reads best on it, at 7.59:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.067) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #155D60 |
| RGB | rgb(21, 93, 96) |
| HSL | hsl(182, 64%, 23%) |
| OKLCH | oklch(43.8% 0.067 199.2) |
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 #155D60 | 7.59:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #155D60 | 2.76:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #155D60 text on white | 7.59:1 | AAA | Lc 86.1 | Fine for body text |
| #155D60 text on black | 2.76:1 | Fails | Lc -16.0 | 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
#F2F7F7
oklch(97.2% 0.005 197.1)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#C9DEDE
oklch(88.5% 0.022 196.8)
-
Step 300
300
#A4C9CA
oklch(80.9% 0.039 198.4)
-
Step 400
400
#70ADAF
oklch(70.7% 0.063 198.5)
-
Step 500
500
#45989C
oklch(63% 0.08 199.6)
-
Step 600
600
#1D8387
oklch(55.7% 0.088 199)
-
Step 700
700
#096E72
oklch(49% 0.081 199.4)
-
Step 800
800 (this color)
#155D60
oklch(43.8% 0.067 199.2)
-
Step 900
900
#184A4C
oklch(37.7% 0.053 198.9)
-
Step 950
950
#102B2D
oklch(26.9% 0.033 201.9)
#155D60 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) | #565860 | 0.069 |
| Deuteranopia (no green cones) | #4B5160 | 0.063 |
| Tritanopia (no blue cones) | #00615E | 0.015 |
| Achromatopsia (no color) | #545454 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155D60
#155D60
oklch(43.8% 0.067 199.2)
- #734243
#734243
oklch(43.8% 0.068 18.9)
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 #155D60, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.016
- Deep Teal #00555A ΔE 0.029
- Dark Green Blue #1F6357 ΔE 0.029
- Dark Aqua #05696B ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.046
- Dark Blue Green #005249 ΔE 0.049
- Dark Teal #014D4E ΔE 0.057
- YInMn Blue #415A77 ΔE 0.061
Use #155D60 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.