#283D34
Closest named color: Onyx (#343A40). oklch(33.9% 0.031 166.1), rgb(40, 61, 52).
Aa
White text reads best on this color (11.61:1).
About this color
#283D34 is a dark, muted green. In OKLCH its lightness is 34%, its chroma 0.031 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.033 away. White text reads best on it, at 11.61:1.
| Hue family | Greens |
| Lightness | dark (34%) |
| Chroma | muted (0.031) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.80:1 |
| White text | 11.61:1 |
Values
| HEX | #283D34 |
| RGB | rgb(40, 61, 52) |
| HSL | hsl(154, 21%, 20%) |
| OKLCH | oklch(33.9% 0.031 166.1) |
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 #283D34 | 11.61:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #283D34 | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #283D34 text on white | 11.61:1 | AAA | Lc 96.7 | Preferred for body text |
| #283D34 text on black | 1.80:1 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D2DCD7
oklch(88.5% 0.013 164.8)
-
Step 300
300
#B3C6BD
oklch(80.9% 0.024 165.7)
-
Step 400
400
#8BA89B
oklch(70.6% 0.037 166.4)
-
Step 500
500
#6E9383
oklch(63.1% 0.048 166.5)
-
Step 600
600
#567D6C
oklch(55.5% 0.051 165.7)
-
Step 700
700
#466A5A
oklch(49.2% 0.049 165)
-
Step 800
800
#3A564A
oklch(42.7% 0.039 166.1)
-
Step 900
900 (this color)
#283D34
oklch(33.9% 0.031 166.1)
-
Step 950
950
#1D2A24
oklch(27.1% 0.021 164.8)
#283D34 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) | #3C3A34 | 0.031 |
| Deuteranopia (no green cones) | #383835 | 0.029 |
| Tritanopia (no blue cones) | #233D3A | 0.011 |
| Achromatopsia (no color) | #393939 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283D34
#283D34
oklch(33.9% 0.031 166.1)
- #44313B
#44313B
oklch(33.9% 0.032 346)
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 #283D34, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.042
- Pakistan Green #283618 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.047
- Gunmetal #293241 ΔE 0.051
- Evergreen #05472A ΔE 0.051
- Midnight Green #073B4C ΔE 0.052
- Charcoal #264653 ΔE 0.053
Use #283D34 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.