#2B3F33
Closest named color: Onyx (#343A40). oklch(34.7% 0.033 157.8), rgb(43, 63, 51).
Aa
White text reads best on this color (11.28:1).
About this color
#2B3F33 is a dark, muted green. In OKLCH its lightness is 35%, its chroma 0.033 and its hue 158°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.036 away. White text reads best on it, at 11.28:1.
| Hue family | Greens |
| Lightness | dark (35%) |
| Chroma | muted (0.033) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.86:1 |
| White text | 11.28:1 |
Values
| HEX | #2B3F33 |
| RGB | rgb(43, 63, 51) |
| HSL | hsl(144, 19%, 21%) |
| OKLCH | oklch(34.7% 0.033 157.8) |
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 #2B3F33 | 11.28:1 | AAA | Lc -99.8 | Preferred for body text |
| Black text on #2B3F33 | 1.86:1 | Fails | Lc 7.9 | Not readable |
| #2B3F33 text on white | 11.28:1 | AAA | Lc 96.0 | Preferred for body text |
| #2B3F33 text on black | 1.86:1 | 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
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D2DCD6
oklch(88.5% 0.013 159.9)
-
Step 300
300
#B4C6BA
oklch(80.9% 0.026 156.6)
-
Step 400
400
#8DA897
oklch(70.6% 0.039 157.6)
-
Step 500
500
#70937E
oklch(63.1% 0.05 158.3)
-
Step 600
600
#587D67
oklch(55.5% 0.054 158)
-
Step 700
700
#486A55
oklch(49.2% 0.052 156.8)
-
Step 800
800
#3B5646
oklch(42.6% 0.042 158)
-
Step 900
900 (this color)
#2B3F33
oklch(34.7% 0.033 157.8)
-
Step 950
950
#1E2A22
oklch(27.1% 0.022 155.5)
#2B3F33 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) | #3F3C32 | 0.031 |
| Deuteranopia (no green cones) | #3B3A34 | 0.029 |
| Tritanopia (no blue cones) | #273F3C | 0.016 |
| Achromatopsia (no color) | #3B3B3B | 0.034 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B3F33
#2B3F33
oklch(34.7% 0.033 157.8)
- #453340
#453340
oklch(34.6% 0.033 336.6)
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 #2B3F33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.038
- Pakistan Green #283618 ΔE 0.045
- Evergreen #05472A ΔE 0.047
- Charcoal #264653 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.053
- Dark Teal #014D4E ΔE 0.056
- Dark Olive #373E02 ΔE 0.057
Use #2B3F33 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.