#233C33
Closest named color: Onyx (#343A40). oklch(33.3% 0.035 169.4), rgb(35, 60, 51).
Aa
White text reads best on this color (11.89:1).
About this color
#233C33 is a dark, muted green. In OKLCH its lightness is 33%, its chroma 0.035 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.037 away. White text reads best on it, at 11.89:1.
| Hue family | Greens |
| Lightness | dark (33%) |
| Chroma | muted (0.035) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.76:1 |
| White text | 11.89:1 |
Values
| HEX | #233C33 |
| RGB | rgb(35, 60, 51) |
| HSL | hsl(158, 26%, 19%) |
| OKLCH | oklch(33.3% 0.035 169.4) |
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 #233C33 | 11.89:1 | AAA | Lc -100.8 | Preferred for body text |
| Black text on #233C33 | 1.76:1 | Fails | Lc 0.0 | Not readable |
| #233C33 text on white | 11.89:1 | AAA | Lc 97.2 | Preferred for body text |
| #233C33 text on black | 1.76:1 | 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
#F3F6F5
oklch(97.1% 0.003 174.5)
-
Step 100
100
#E5EBE9
oklch(93.5% 0.007 174.4)
-
Step 200
200
#D0DCD7
oklch(88.4% 0.015 169.2)
-
Step 300
300
#B1C6BE
oklch(80.8% 0.025 170.8)
-
Step 400
400
#87A99C
oklch(70.6% 0.042 169.8)
-
Step 500
500
#699484
oklch(63% 0.053 169.5)
-
Step 600
600
#4F7F6E
oklch(55.7% 0.059 169.7)
-
Step 700
700
#406B5C
oklch(49.2% 0.054 169.8)
-
Step 800
800
#35574B
oklch(42.7% 0.045 169.8)
-
Step 900
900 (this color)
#233C33
oklch(33.3% 0.035 169.4)
-
Step 950
950
#1C2A25
oklch(27% 0.021 170.6)
#233C33 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) | #3B3933 | 0.036 |
| Deuteranopia (no green cones) | #363634 | 0.034 |
| Tritanopia (no blue cones) | #1C3C39 | 0.012 |
| Achromatopsia (no color) | #373737 | 0.035 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #233C33
#233C33
oklch(33.3% 0.035 169.4)
- #442F39
#442F39
oklch(33.3% 0.034 349)
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 #233C33, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.037
- Pakistan Green #283618 ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.048
- Charcoal Grey #3C4142 ΔE 0.049
- Midnight Green #073B4C ΔE 0.049
- Gunmetal #293241 ΔE 0.050
- Evergreen #05472A ΔE 0.050
- Charcoal #264653 ΔE 0.057
Use #233C33 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.