#2B4239
Closest named color: Charcoal Grey (#3C4142). oklch(35.7% 0.033 168.1), rgb(43, 66, 57).
Aa
White text reads best on this color (10.81:1).
About this color
#2B4239 is a dark, muted green. In OKLCH its lightness is 36%, its chroma 0.033 and its hue 168°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.031 away. White text reads best on it, at 10.81:1.
| Hue family | Greens |
| Lightness | dark (36%) |
| Chroma | muted (0.033) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.94:1 |
| White text | 10.81:1 |
Values
| HEX | #2B4239 |
| RGB | rgb(43, 66, 57) |
| HSL | hsl(157, 21%, 21%) |
| OKLCH | oklch(35.7% 0.033 168.1) |
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 #2B4239 | 10.81:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #2B4239 | 1.94:1 | Fails | Lc 8.9 | Not readable |
| #2B4239 text on white | 10.81:1 | AAA | Lc 95.0 | Preferred for body text |
| #2B4239 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
#D1DCD7
oklch(88.5% 0.014 167.1)
-
Step 300
300
#B2C6BD
oklch(80.9% 0.025 166.9)
-
Step 400
400
#89A99C
oklch(70.7% 0.04 168.5)
-
Step 500
500
#6C9484
oklch(63.2% 0.05 168.1)
-
Step 600
600
#537E6D
oklch(55.6% 0.055 167.6)
-
Step 700
700
#436A5B
oklch(49% 0.051 168.1)
-
Step 800
800
#37574B
oklch(42.8% 0.043 168.7)
-
Step 900
900 (this color)
#2B4239
oklch(35.7% 0.033 168.1)
-
Step 950
950
#1C2A24
oklch(27% 0.022 166.4)
#2B4239 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) | #413F39 | 0.034 |
| Deuteranopia (no green cones) | #3D3C3A | 0.033 |
| Tritanopia (no blue cones) | #25423F | 0.012 |
| Achromatopsia (no color) | #3D3D3D | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4239
#2B4239
oklch(35.7% 0.033 168.1)
- #4A353F
#4A353F
oklch(35.6% 0.034 348.8)
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 #2B4239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.031
- Onyx #343A40 ΔE 0.035
- Charcoal #264653 ΔE 0.043
- Dark Teal #014D4E ΔE 0.046
- Evergreen #05472A ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.050
- Dark Blue Green #005249 ΔE 0.054
Use #2B4239 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.