#234D43
Closest named color: Dark Blue Green (#005249). oklch(38.7% 0.05 175.9), rgb(35, 77, 67).
Aa
White text reads best on this color (9.48:1).
About this color
#234D43 is a dark, muted teal or cyan. In OKLCH its lightness is 39%, its chroma 0.050 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Blue Green (#005249), ΔE 0.022 away. White text reads best on it, at 9.48:1.
| Hue family | Teals and cyans |
| Lightness | dark (39%) |
| Chroma | muted (0.050) |
| Temperature | cool |
| Nearest name | Dark Blue Green (#005249) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #234D43 |
| RGB | rgb(35, 77, 67) |
| HSL | hsl(166, 37%, 22%) |
| OKLCH | oklch(38.7% 0.05 175.9) |
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 #234D43 | 9.48:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #234D43 | 2.21:1 | Fails | Lc 12.1 | Not readable |
| #234D43 text on white | 9.48:1 | AAA | Lc 91.8 | Preferred for body text |
| #234D43 text on black | 2.21:1 | Fails | Lc -10.6 | 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
#F2F7F5
oklch(97.2% 0.006 170.4)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#A8C9BF
oklch(80.9% 0.038 175)
-
Step 400
400
#78AD9F
oklch(70.6% 0.06 176.2)
-
Step 500
500
#529988
oklch(63.1% 0.077 176.3)
-
Step 600
600
#328371
oklch(55.5% 0.084 175.9)
-
Step 700
700
#236F5F
oklch(49.1% 0.078 176.1)
-
Step 800
800
#205B4E
oklch(42.9% 0.065 176)
-
Step 900
900 (this color)
#234D43
oklch(38.7% 0.05 175.9)
-
Step 950
950
#142C26
oklch(27.1% 0.032 175.7)
#234D43 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) | #4A4943 | 0.052 |
| Deuteranopia (no green cones) | #444444 | 0.050 |
| Tritanopia (no blue cones) | #104E4A | 0.016 |
| Achromatopsia (no color) | #464646 | 0.051 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234D43
#234D43
oklch(38.7% 0.05 175.9)
- #5A3945
#5A3945
oklch(38.7% 0.05 356.2)
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 #234D43, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Blue Green #005249 ΔE 0.022
- Dark Teal #014D4E ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.026
- Deep Teal #00555A ΔE 0.040
- Charcoal #264653 ΔE 0.042
- Charcoal Grey #3C4142 ΔE 0.048
- Evergreen #05472A ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.055
Use #234D43 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.