#237278
Closest named color: Deep Turquoise (#017374). oklch(50.8% 0.075 202.4), rgb(35, 114, 120).
Aa
White text reads best on this color (5.60:1).
About this color
#237278 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 51%, its chroma 0.075 and its hue 202°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.015 away. White text reads best on it, at 5.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.74:1 |
| White text | 5.60:1 |
Values
| HEX | #237278 |
| RGB | rgb(35, 114, 120) |
| HSL | hsl(184, 55%, 30%) |
| OKLCH | oklch(50.8% 0.075 202.4) |
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 #237278 | 5.60:1 | AA | Lc -83.0 | Fine for body text |
| Black text on #237278 | 3.74:1 | AA large text | Lc 26.4 | Dividers and decoration only |
| #237278 text on white | 5.60:1 | AA | Lc 77.7 | Fine for body text |
| #237278 text on black | 3.74:1 | AA large text | Lc -24.1 | 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 700.
-
Step 50
50
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E2ECED
oklch(93.6% 0.011 204.1)
-
Step 200
200
#CBDDDF
oklch(88.5% 0.019 204.8)
-
Step 300
300
#A6C8CB
oklch(80.9% 0.037 203)
-
Step 400
400
#75ACB0
oklch(70.8% 0.058 201.7)
-
Step 500
500
#4D979D
oklch(63.1% 0.074 202.4)
-
Step 600
600
#2B8188
oklch(55.6% 0.08 202.9)
-
Step 700
700 (this color)
#237278
oklch(50.8% 0.075 202.4)
-
Step 800
800
#1B595E
oklch(42.7% 0.062 202.8)
-
Step 900
900
#1E494D
oklch(37.7% 0.048 203.6)
-
Step 950
950
#132B2D
oklch(27.1% 0.03 202.6)
#237278 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) | #696D78 | 0.075 |
| Deuteranopia (no green cones) | #5C6478 | 0.068 |
| Tritanopia (no blue cones) | #007774 | 0.021 |
| Achromatopsia (no color) | #686868 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #237278
#237278
oklch(50.8% 0.075 202.4)
- #8B5452
#8B5452
oklch(50.8% 0.074 22.2)
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 #237278, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.015
- Dark Aquamarine #017371 ΔE 0.019
- Deep Aqua #08787F ΔE 0.019
- Bluegreen #017A79 ΔE 0.025
- Dark Aqua #05696B ΔE 0.036
- Teal #008080 ΔE 0.041
- Ocean #017B92 ΔE 0.042
- Sea Blue #047495 ΔE 0.046
Use #237278 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.