#2B423A
Closest named color: Charcoal Grey (#3C4142). oklch(35.7% 0.032 170.7), rgb(43, 66, 58).
Aa
White text reads best on this color (10.80:1).
About this color
#2B423A is a dark, muted teal or cyan. In OKLCH its lightness is 36%, its chroma 0.032 and its hue 171°. Its hue sits on the cool side of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.030 away. White text reads best on it, at 10.80:1.
| Hue family | Teals and cyans |
| Lightness | dark (36%) |
| Chroma | muted (0.032) |
| Temperature | cool |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.94:1 |
| White text | 10.80:1 |
Values
| HEX | #2B423A |
| RGB | rgb(43, 66, 58) |
| HSL | hsl(159, 21%, 21%) |
| OKLCH | oklch(35.7% 0.032 170.7) |
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 #2B423A | 10.80:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #2B423A | 1.94:1 | Fails | Lc 8.9 | Not readable |
| #2B423A text on white | 10.80:1 | AAA | Lc 95.0 | Preferred for body text |
| #2B423A text on black | 1.94:1 | Fails | Lc -7.6 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D1DCD8
oklch(88.5% 0.013 172.3)
-
Step 300
300
#B2C6BE
oklch(80.9% 0.024 169.7)
-
Step 400
400
#89A99D
oklch(70.7% 0.039 170.4)
-
Step 500
500
#6B9385
oklch(62.9% 0.049 171.1)
-
Step 600
600
#537E6F
oklch(55.7% 0.053 170.4)
-
Step 700
700
#436A5D
oklch(49.1% 0.049 171.2)
-
Step 800
800
#37564C
oklch(42.6% 0.04 172.1)
-
Step 900
900 (this color)
#2B423A
oklch(35.7% 0.032 170.7)
-
Step 950
950
#1C2A25
oklch(27% 0.021 170.6)
#2B423A 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) | #413F3A | 0.034 |
| Deuteranopia (no green cones) | #3D3C3B | 0.033 |
| Tritanopia (no blue cones) | #254240 | 0.012 |
| Achromatopsia (no color) | #3D3D3D | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B423A
#2B423A
oklch(35.7% 0.032 170.7)
- #4A363E
#4A363E
oklch(35.8% 0.031 353)
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 #2B423A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.030
- Onyx #343A40 ΔE 0.034
- Charcoal #264653 ΔE 0.041
- Dark Teal #014D4E ΔE 0.045
- Dark Slate Gray #2F4F4F ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.049
- Evergreen #05472A ΔE 0.049
- Dark Blue Green #005249 ΔE 0.054
Use #2B423A 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.