#234137
Closest named color: Onyx (#343A40). oklch(34.8% 0.04 170.5), rgb(35, 65, 55).
Aa
White text reads best on this color (11.15:1).
About this color
#234137 is a dark, muted teal or cyan. In OKLCH its lightness is 35%, its chroma 0.040 and its hue 170°. Its hue sits on the cool side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.040 away. White text reads best on it, at 11.15:1.
| Hue family | Teals and cyans |
| Lightness | dark (35%) |
| Chroma | muted (0.040) |
| Temperature | cool |
| Nearest name | Onyx (#343A40) |
| Black text | 1.88:1 |
| White text | 11.15:1 |
Values
| HEX | #234137 |
| RGB | rgb(35, 65, 55) |
| HSL | hsl(160, 30%, 20%) |
| OKLCH | oklch(34.8% 0.04 170.5) |
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 #234137 | 11.15:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #234137 | 1.88:1 | Fails | Lc 8.2 | Not readable |
| #234137 text on white | 11.15:1 | AAA | Lc 95.7 | Preferred for body text |
| #234137 text on black | 1.88:1 | Fails | Lc 0.0 | Not readable |
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 900.
-
Step 50
50
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E4ECE9
oklch(93.6% 0.009 171.8)
-
Step 200
200
#CFDDD7
oklch(88.5% 0.017 168.4)
-
Step 300
300
#AEC7BE
oklch(80.8% 0.03 171.9)
-
Step 400
400
#83AB9C
oklch(70.8% 0.049 169.9)
-
Step 500
500
#629684
oklch(63.1% 0.062 170.5)
-
Step 600
600
#48806E
oklch(55.6% 0.066 171.1)
-
Step 700
700
#396C5C
oklch(49% 0.061 171.3)
-
Step 800
800
#2F584B
oklch(42.6% 0.052 171.2)
-
Step 900
900 (this color)
#234137
oklch(34.8% 0.04 170.5)
-
Step 950
950
#192B25
oklch(27.1% 0.026 171.3)
#234137 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) | #3F3D37 | 0.041 |
| Deuteranopia (no green cones) | #3A3A38 | 0.039 |
| Tritanopia (no blue cones) | #1A413E | 0.014 |
| Achromatopsia (no color) | #3B3B3B | 0.041 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234137
#234137
oklch(34.8% 0.04 170.5)
- #4A313D
#4A313D
oklch(34.7% 0.041 349.1)
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 #234137, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.040
- Evergreen #05472A ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.042
- Dark Teal #014D4E ΔE 0.047
- Charcoal #264653 ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.050
- Pakistan Green #283618 ΔE 0.050
- Midnight Green #073B4C ΔE 0.052
Use #234137 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.