#137C8B
Closest named color: Ocean (#017B92). oklch(53.9% 0.089 210.2), rgb(19, 124, 139).
Aa
White text reads best on this color (4.90:1).
About this color
#137C8B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.089 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.013 away. White text reads best on it, at 4.90:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.28:1 |
| White text | 4.90:1 |
Values
| HEX | #137C8B |
| RGB | rgb(19, 124, 139) |
| HSL | hsl(188, 76%, 31%) |
| OKLCH | oklch(53.9% 0.089 210.2) |
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 #137C8B | 4.90:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #137C8B | 4.28:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #137C8B text on white | 4.90:1 | AA | Lc 73.5 | Content text, not long reading |
| #137C8B text on black | 4.28:1 | AA large text | Lc -28.2 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECEE
oklch(93.6% 0.011 211)
-
Step 200
200
#C9DDE1
oklch(88.4% 0.022 211)
-
Step 300
300
#A4C8CF
oklch(80.9% 0.04 210.7)
-
Step 400
400
#70ACB7
oklch(70.7% 0.064 210.3)
-
Step 500
500
#4597A5
oklch(63.1% 0.082 210.2)
-
Step 600
600 (this color)
#137C8B
oklch(53.9% 0.089 210.2)
-
Step 700
700
#096D7B
oklch(49.1% 0.083 210.6)
-
Step 800
800
#105964
oklch(42.7% 0.069 210.4)
-
Step 900
900
#184951
oklch(37.6% 0.053 210.1)
-
Step 950
950
#102B30
oklch(27% 0.034 211.3)
#137C8B 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) | #6F778C | 0.083 |
| Deuteranopia (no green cones) | #606C8B | 0.076 |
| Tritanopia (no blue cones) | #008381 | 0.031 |
| Achromatopsia (no color) | #717171 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #137C8B
#137C8B
oklch(53.9% 0.089 210.2)
- #9B5A4F
#9B5A4F
oklch(53.9% 0.088 30.4)
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 #137C8B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.013
- Deep Aqua #08787F ΔE 0.021
- Teal #008080 ΔE 0.025
- Bluegreen #017A79 ΔE 0.029
- Sea Blue #047495 ΔE 0.034
- Teal Blue #01889F ΔE 0.041
- Deep Turquoise #017374 ΔE 0.042
- Dark Aquamarine #017371 ΔE 0.045
Use #137C8B 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.