#237A6F
Closest named color: Bluegreen (#017A79). oklch(52.6% 0.082 182.9), rgb(35, 122, 111).
Aa
White text reads best on this color (5.14:1).
About this color
#237A6F is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.082 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.018 away. White text reads best on it, at 5.14:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.08:1 |
| White text | 5.14:1 |
Values
| HEX | #237A6F |
| RGB | rgb(35, 122, 111) |
| HSL | hsl(172, 55%, 31%) |
| OKLCH | oklch(52.6% 0.082 182.9) |
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 #237A6F | 5.14:1 | AA | Lc -80.5 | Fine for body text |
| Black text on #237A6F | 4.08:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #237A6F text on white | 5.14:1 | AA | Lc 75.1 | Fine for body text |
| #237A6F text on black | 4.08:1 | AA large text | Lc -26.6 | 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
#F2F7F6
oklch(97.2% 0.005 183)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CBDEDA
oklch(88.5% 0.021 181.8)
-
Step 300
300
#A7C9C3
oklch(80.9% 0.037 183.5)
-
Step 400
400
#76ADA4
oklch(70.7% 0.059 183.3)
-
Step 500
500
#4F998E
oklch(63.2% 0.076 183)
-
Step 600
600 (this color)
#237A6F
oklch(52.6% 0.082 182.9)
-
Step 700
700
#1F6F65
oklch(49.2% 0.077 183.1)
-
Step 800
800
#1D5A52
oklch(42.6% 0.063 183.1)
-
Step 900
900
#1F4A44
oklch(37.7% 0.049 183.3)
-
Step 950
950
#132B28
oklch(26.8% 0.031 185.1)
#237A6F 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) | #74736F | 0.087 |
| Deuteranopia (no green cones) | #686A70 | 0.083 |
| Tritanopia (no blue cones) | #007C77 | 0.014 |
| Achromatopsia (no color) | #6D6D6D | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #237A6F
#237A6F
oklch(52.6% 0.082 182.9)
- #925666
#925666
oklch(52.6% 0.082 3.1)
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 #237A6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.018
- Teal #008080 ΔE 0.027
- Dark Aquamarine #017371 ΔE 0.028
- Deep Aqua #08787F ΔE 0.029
- Deep Turquoise #017374 ΔE 0.030
- Ocean #017B92 ΔE 0.055
- Dark Cyan #008B8B ΔE 0.056
- Dark Aqua #05696B ΔE 0.057
Use #237A6F 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.