#155B67
Closest named color: Petrol (#005F6A). oklch(43.5% 0.068 211.9), rgb(21, 91, 103).
Aa
White text reads best on this color (7.70:1).
About this color
#155B67 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.068 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.013 away. White text reads best on it, at 7.70:1.
| Hue family | Teals and cyans |
| Lightness | dark (44%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.72:1 |
| White text | 7.70:1 |
Values
| HEX | #155B67 |
| RGB | rgb(21, 91, 103) |
| HSL | hsl(189, 66%, 24%) |
| OKLCH | oklch(43.5% 0.068 211.9) |
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 #155B67 | 7.70:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #155B67 | 2.72:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #155B67 text on white | 7.70:1 | AAA | Lc 86.5 | Fine for body text |
| #155B67 text on black | 2.72:1 | Fails | Lc -15.6 | 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
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A4C8D0
oklch(80.9% 0.04 212.7)
-
Step 400
400
#70ACB8
oklch(70.8% 0.064 211.6)
-
Step 500
500
#4697A6
oklch(63.2% 0.082 211.4)
-
Step 600
600
#1E8191
oklch(55.6% 0.089 211.2)
-
Step 700
700
#0C6D7C
oklch(49.2% 0.083 211.8)
-
Step 800
800 (this color)
#155B67
oklch(43.5% 0.068 211.9)
-
Step 900
900
#194952
oklch(37.7% 0.053 212.1)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#155B67 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) | #525868 | 0.064 |
| Deuteranopia (no green cones) | #464F67 | 0.058 |
| Tritanopia (no blue cones) | #00605F | 0.025 |
| Achromatopsia (no color) | #535353 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #155B67
#155B67
oklch(43.5% 0.068 211.9)
- #724239
#724239
oklch(43.4% 0.069 31.4)
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 #155B67, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.013
- Deep Teal #00555A ΔE 0.029
- Dark Green Blue #1F6357 ΔE 0.043
- Dark Aqua #05696B ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.047
- YInMn Blue #415A77 ΔE 0.051
- Dark Blue Green #005249 ΔE 0.055
- Deep Sea Blue #015482 ΔE 0.056
Use #155B67 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.