#2B4031
Closest named color: Charcoal Grey (#3C4142). oklch(34.9% 0.037 153.1), rgb(43, 64, 49).
Aa
White text reads best on this color (11.16:1).
About this color
#2B4031 is a dark, muted green. In OKLCH its lightness is 35%, its chroma 0.037 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.041 away. White text reads best on it, at 11.16:1.
| Hue family | Greens |
| Lightness | dark (35%) |
| Chroma | muted (0.037) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.88:1 |
| White text | 11.16:1 |
Values
| HEX | #2B4031 |
| RGB | rgb(43, 64, 49) |
| HSL | hsl(137, 20%, 21%) |
| OKLCH | oklch(34.9% 0.037 153.1) |
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 #2B4031 | 11.16:1 | AAA | Lc -99.6 | Preferred for body text |
| Black text on #2B4031 | 1.88:1 | Fails | Lc 8.1 | Not readable |
| #2B4031 text on white | 11.16:1 | AAA | Lc 95.8 | Preferred for body text |
| #2B4031 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
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E6EBE7
oklch(93.5% 0.008 151.9)
-
Step 200
200
#D2DCD4
oklch(88.5% 0.015 151.7)
-
Step 300
300
#B4C6B8
oklch(80.9% 0.028 152.3)
-
Step 400
400
#8CA994
oklch(70.7% 0.044 153.7)
-
Step 500
500
#6F9479
oklch(63.1% 0.058 152.9)
-
Step 600
600
#577E62
oklch(55.6% 0.062 152.9)
-
Step 700
700
#476A51
oklch(49% 0.057 152.9)
-
Step 800
800
#3A5743
oklch(42.7% 0.048 153.9)
-
Step 900
900 (this color)
#2B4031
oklch(34.9% 0.037 153.1)
-
Step 950
950
#1E2A21
oklch(27.1% 0.023 152.3)
#2B4031 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) | #403D30 | 0.033 |
| Deuteranopia (no green cones) | #3D3A32 | 0.033 |
| Tritanopia (no blue cones) | #283F3C | 0.020 |
| Achromatopsia (no color) | #3B3B3B | 0.037 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B4031
#2B4031
oklch(34.9% 0.037 153.1)
- #463343
#463343
oklch(34.9% 0.038 331.9)
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 #2B4031, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.041
- Onyx #343A40 ΔE 0.041
- Evergreen #05472A ΔE 0.043
- Pakistan Green #283618 ΔE 0.044
- Dark Olive #373E02 ΔE 0.053
- Charcoal #264653 ΔE 0.055
- Pine Green #0A481E ΔE 0.056
- Dark Teal #014D4E ΔE 0.056
Use #2B4031 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.