#237C8C
Closest named color: Ocean (#017B92). oklch(54.2% 0.084 212.4), rgb(35, 124, 140).
Aa
White text reads best on this color (4.84:1).
About this color
#237C8C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.084 and its hue 212°. Its hue sits on the cool side of the wheel. The nearest named color is Ocean (#017B92), ΔE 0.015 away. White text reads best on it, at 4.84:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Ocean (#017B92) |
| Black text | 4.33:1 |
| White text | 4.84:1 |
Values
| HEX | #237C8C |
| RGB | rgb(35, 124, 140) |
| HSL | hsl(189, 60%, 34%) |
| OKLCH | oklch(54.2% 0.084 212.4) |
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 #237C8C | 4.84:1 | AA | Lc -78.7 | Fine for body text |
| Black text on #237C8C | 4.33:1 | AA large text | Lc 30.8 | Non-text elements, placeholder text |
| #237C8C text on white | 4.84:1 | AA | Lc 73.3 | Content text, not long reading |
| #237C8C text on black | 4.33:1 | AA large text | Lc -28.4 | 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
#CADDE1
oklch(88.5% 0.021 211.8)
-
Step 300
300
#A6C8CF
oklch(81% 0.038 211.5)
-
Step 400
400
#74ABB7
oklch(70.7% 0.06 212.8)
-
Step 500
500
#4B96A5
oklch(63.1% 0.077 212.4)
-
Step 600
600 (this color)
#237C8C
oklch(54.2% 0.084 212.4)
-
Step 700
700
#196C7B
oklch(49.1% 0.078 212.9)
-
Step 800
800
#195864
oklch(42.7% 0.065 213)
-
Step 900
900
#1C4951
oklch(37.8% 0.051 211)
-
Step 950
950
#122B30
oklch(27.1% 0.032 212.2)
#237C8C 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) | #70788D | 0.078 |
| Deuteranopia (no green cones) | #616D8C | 0.070 |
| Tritanopia (no blue cones) | #008281 | 0.031 |
| Achromatopsia (no color) | #717171 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #237C8C
#237C8C
oklch(54.2% 0.084 212.4)
- #9A5C50
#9A5C50
oklch(54.2% 0.084 31.7)
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 #237C8C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Ocean #017B92 ΔE 0.015
- Deep Aqua #08787F ΔE 0.026
- Teal #008080 ΔE 0.028
- Bluegreen #017A79 ΔE 0.034
- Sea Blue #047495 ΔE 0.034
- Teal Blue #01889F ΔE 0.039
- Cerulean #457B9D ΔE 0.040
- Metallic Blue #4F738E ΔE 0.043
Use #237C8C 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.