#234243
Closest named color: Charcoal (#264653). oklch(35.6% 0.037 198.3), rgb(35, 66, 67).
Aa
White text reads best on this color (10.87:1).
About this color
#234243 is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.037 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal (#264653), ΔE 0.028 away. White text reads best on it, at 10.87:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.037) |
| Temperature | cool |
| Nearest name | Charcoal (#264653) |
| Black text | 1.93:1 |
| White text | 10.87:1 |
Values
| HEX | #234243 |
| RGB | rgb(35, 66, 67) |
| HSL | hsl(182, 31%, 20%) |
| OKLCH | oklch(35.6% 0.037 198.3) |
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 #234243 | 10.87:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #234243 | 1.93:1 | Fails | Lc 8.8 | Not readable |
| #234243 text on white | 10.87:1 | AAA | Lc 95.1 | Preferred for body text |
| #234243 text on black | 1.93:1 | Fails | Lc -7.5 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4ECEC
oklch(93.7% 0.009 197)
-
Step 200
200
#CEDCDD
oklch(88.4% 0.015 202)
-
Step 300
300
#ADC6C7
oklch(80.8% 0.027 199.6)
-
Step 400
400
#80A9AB
oklch(70.6% 0.044 199.9)
-
Step 500
500
#5F9496
oklch(63% 0.056 198.9)
-
Step 600
600
#447F80
oklch(55.7% 0.062 197)
-
Step 700
700
#356B6D
oklch(49.2% 0.057 198.6)
-
Step 800
800
#2D5758
oklch(42.7% 0.047 197.5)
-
Step 900
900 (this color)
#234243
oklch(35.6% 0.037 198.3)
-
Step 950
950
#182A2B
oklch(27% 0.024 200.3)
#234243 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) | #3E3F43 | 0.038 |
| Deuteranopia (no green cones) | #393B43 | 0.036 |
| Tritanopia (no blue cones) | #144442 | 0.015 |
| Achromatopsia (no color) | #3D3D3D | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #234243
#234243
oklch(35.6% 0.037 198.3)
- #4E3435
#4E3435
oklch(35.6% 0.038 16.6)
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 #234243, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.028
- Onyx #343A40 ΔE 0.032
- Charcoal Grey #3C4142 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.034
- Dark Teal #014D4E ΔE 0.038
- Midnight Green #073B4C ΔE 0.041
- Dark Grey Blue #29465B ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.047
Use #234243 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.