#237A6C
Closest named color: Bluegreen (#017A79). oklch(52.5% 0.084 179.9), rgb(35, 122, 108).
Aa
White text reads best on this color (5.15:1).
About this color
#237A6C is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.084 and its hue 180°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.022 away. White text reads best on it, at 5.15:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.084) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.07:1 |
| White text | 5.15:1 |
Values
| HEX | #237A6C |
| RGB | rgb(35, 122, 108) |
| HSL | hsl(170, 55%, 31%) |
| OKLCH | oklch(52.5% 0.084 179.9) |
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 #237A6C | 5.15:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #237A6C | 4.07:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #237A6C text on white | 5.15:1 | AA | Lc 75.2 | Fine for body text |
| #237A6C text on black | 4.07:1 | AA large text | Lc -26.5 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDED9
oklch(88.5% 0.021 178.3)
-
Step 300
300
#A7C9C1
oklch(80.9% 0.038 179.4)
-
Step 400
400
#76ADA2
oklch(70.6% 0.06 180.6)
-
Step 500
500
#50998B
oklch(63.1% 0.077 179.7)
-
Step 600
600 (this color)
#237A6C
oklch(52.5% 0.084 179.9)
-
Step 700
700
#206F62
oklch(49.1% 0.078 179.6)
-
Step 800
800
#1D5A50
oklch(42.6% 0.064 180.2)
-
Step 900
900
#1F4A42
oklch(37.6% 0.05 179.6)
-
Step 950
950
#132C27
oklch(27.1% 0.033 179.2)
#237A6C 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) | #75726B | 0.089 |
| Deuteranopia (no green cones) | #686A6D | 0.083 |
| Tritanopia (no blue cones) | #007C76 | 0.016 |
| Achromatopsia (no color) | #6D6D6D | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #237A6C
#237A6C
oklch(52.5% 0.084 179.9)
- #925568
#925568
oklch(52.5% 0.084 0.4)
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 #237A6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.022
- Dark Aquamarine #017371 ΔE 0.030
- Teal #008080 ΔE 0.031
- Deep Turquoise #017374 ΔE 0.032
- Deep Aqua #08787F ΔE 0.033
- Dark Aqua #05696B ΔE 0.058
- Dark Cyan #008B8B ΔE 0.059
- Ocean #017B92 ΔE 0.060
Use #237A6C 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.