#135B68
Closest named color: Petrol (#005F6A). oklch(43.5% 0.07 212.9), rgb(19, 91, 104).
Aa
White text reads best on this color (7.70:1).
About this color
#135B68 is a dark, muted teal or cyan. In OKLCH its lightness is 44%, its chroma 0.070 and its hue 213°. 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 (0.070) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 2.72:1 |
| White text | 7.70:1 |
Values
| HEX | #135B68 |
| RGB | rgb(19, 91, 104) |
| HSL | hsl(189, 69%, 24%) |
| OKLCH | oklch(43.5% 0.07 212.9) |
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 #135B68 | 7.70:1 | AAA | Lc -91.2 | Preferred for body text |
| Black text on #135B68 | 2.72:1 | Fails | Lc 17.6 | Dividers and decoration only |
| #135B68 text on white | 7.70:1 | AAA | Lc 86.4 | Fine for body text |
| #135B68 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E1ECEE
oklch(93.5% 0.012 209.8)
-
Step 200
200
#C9DDE2
oklch(88.4% 0.022 214.4)
-
Step 300
300
#A3C8D0
oklch(80.9% 0.041 212.3)
-
Step 400
400
#6FACB9
oklch(70.8% 0.066 212.6)
-
Step 500
500
#4497A7
oklch(63.2% 0.083 212.1)
-
Step 600
600
#1B8193
oklch(55.7% 0.091 212.9)
-
Step 700
700
#076D7D
oklch(49.2% 0.084 212.6)
-
Step 800
800 (this color)
#135B68
oklch(43.5% 0.07 212.9)
-
Step 900
900
#184953
oklch(37.7% 0.054 213.6)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#135B68 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) | #515869 | 0.063 |
| Deuteranopia (no green cones) | #464F68 | 0.058 |
| Tritanopia (no blue cones) | #00605F | 0.026 |
| Achromatopsia (no color) | #535353 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #135B68
#135B68
oklch(43.5% 0.07 212.9)
- #734238
#734238
oklch(43.5% 0.071 32.4)
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 #135B68, 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 0.030
- Dark Aqua #05696B ΔE 0.044
- Dark Green Blue #1F6357 ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.048
- YInMn Blue #415A77 ΔE 0.051
- Deep Sea Blue #015482 ΔE 0.055
- Dark Blue Green #005249 ΔE 0.056
Use #135B68 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.