#2A4237
Closest named color: Charcoal Grey (#3C4142). oklch(35.6% 0.036 164.2), rgb(42, 66, 55).
Aa
White text reads best on this color (10.86:1).
About this color
#2A4237 is a dark, muted green. In OKLCH its lightness is 36%, its chroma 0.036 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.035 away. White text reads best on it, at 10.86:1.
| Hue family | Greens |
| Lightness | dark (36%) |
| Chroma | muted (0.036) |
| Temperature | in between |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.93:1 |
| White text | 10.86:1 |
Values
| HEX | #2A4237 |
| RGB | rgb(42, 66, 55) |
| HSL | hsl(153, 22%, 21%) |
| OKLCH | oklch(35.6% 0.036 164.2) |
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 #2A4237 | 10.86:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #2A4237 | 1.93:1 | Fails | Lc 8.8 | Not readable |
| #2A4237 text on white | 10.86:1 | AAA | Lc 95.1 | Preferred for body text |
| #2A4237 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBE8
oklch(93.5% 0.008 164.9)
-
Step 200
200
#D1DCD6
oklch(88.4% 0.014 162.4)
-
Step 300
300
#B2C6BC
oklch(80.8% 0.026 164.3)
-
Step 400
400
#89A99A
oklch(70.6% 0.041 165.1)
-
Step 500
500
#6B9481
oklch(63.1% 0.054 164.5)
-
Step 600
600
#517F6A
oklch(55.7% 0.06 164)
-
Step 700
700
#426B58
oklch(49.1% 0.056 163.5)
-
Step 800
800
#375748
oklch(42.7% 0.045 163.5)
-
Step 900
900 (this color)
#2A4237
oklch(35.6% 0.036 164.2)
-
Step 950
950
#1C2A23
oklch(27% 0.023 162.6)
#2A4237 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) | #413F36 | 0.035 |
| Deuteranopia (no green cones) | #3D3C38 | 0.034 |
| Tritanopia (no blue cones) | #24423F | 0.015 |
| Achromatopsia (no color) | #3D3D3D | 0.036 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A4237
#2A4237
oklch(35.6% 0.036 164.2)
- #4A3540
#4A3540
oklch(35.7% 0.035 346.2)
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 #2A4237, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.035
- Onyx #343A40 ΔE 0.038
- Evergreen #05472A ΔE 0.045
- Charcoal #264653 ΔE 0.046
- Dark Teal #014D4E ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.053
- Pakistan Green #283618 ΔE 0.054
Use #2A4237 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.