#237C81
Closest named color: Teal (#008080). oklch(53.8% 0.081 200.6), rgb(35, 124, 129).
Aa
White text reads best on this color (4.91:1).
About this color
#237C81 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.081 and its hue 201°. Its hue sits on the cool side of the wheel. The nearest named color is Teal (#008080), ΔE 0.016 away. White text reads best on it, at 4.91:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Teal (#008080) |
| Black text | 4.27:1 |
| White text | 4.91:1 |
Values
| HEX | #237C81 |
| RGB | rgb(35, 124, 129) |
| HSL | hsl(183, 57%, 32%) |
| OKLCH | oklch(53.8% 0.081 200.6) |
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 #237C81 | 4.91:1 | AA | Lc -79.2 | Fine for body text |
| Black text on #237C81 | 4.27:1 | AA large text | Lc 30.3 | Non-text elements, placeholder text |
| #237C81 text on white | 4.91:1 | AA | Lc 73.7 | Content text, not long reading |
| #237C81 text on black | 4.27:1 | AA large text | Lc -28.0 | 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 600.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDDE
oklch(88.4% 0.019 200.8)
-
Step 300
300
#A6C8CA
oklch(80.9% 0.036 200.9)
-
Step 400
400
#74ACAF
oklch(70.7% 0.059 200.2)
-
Step 500
500
#4C979C
oklch(63.1% 0.075 201.2)
-
Step 600
600 (this color)
#237C81
oklch(53.8% 0.081 200.6)
-
Step 700
700
#1B6D72
oklch(49% 0.075 201.1)
-
Step 800
800
#1A595D
oklch(42.7% 0.062 201.2)
-
Step 900
900
#1D494C
oklch(37.6% 0.048 201.4)
-
Step 950
950
#122B2C
oklch(27% 0.031 198.9)
#237C81 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) | #727681 | 0.082 |
| Deuteranopia (no green cones) | #656C81 | 0.077 |
| Tritanopia (no blue cones) | #00817D | 0.021 |
| Achromatopsia (no color) | #707070 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #237C81
#237C81
oklch(53.8% 0.081 200.6)
- #985A5A
#985A5A
oklch(53.8% 0.082 20.1)
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 #237C81, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal #008080 ΔE 0.016
- Deep Aqua #08787F ΔE 0.017
- Bluegreen #017A79 ΔE 0.019
- Ocean #017B92 ΔE 0.029
- Deep Turquoise #017374 ΔE 0.035
- Dark Aquamarine #017371 ΔE 0.038
- Dark Cyan #008B8B ΔE 0.043
- Sea Blue #047495 ΔE 0.047
Use #237C81 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.