#33443D
Closest named color: Charcoal Grey (#3C4142). oklch(37% 0.025 167.9), rgb(51, 68, 61).
Aa
White text reads best on this color (10.31:1).
About this color
#33443D is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.020 away. White text reads best on it, at 10.31:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.03:1 |
| White text | 10.31:1 |
Values
| HEX | #33443D |
| RGB | rgb(51, 68, 61) |
| HSL | hsl(155, 14%, 23%) |
| OKLCH | oklch(37% 0.025 167.9) |
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 #33443D | 10.31:1 | AAA | Lc -98.0 | Preferred for body text |
| Black text on #33443D | 2.03:1 | Fails | Lc 10.0 | Not readable |
| #33443D text on white | 10.31:1 | AAA | Lc 94.0 | Preferred for body text |
| #33443D text on black | 2.03:1 | Fails | Lc -8.6 | 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
#E7EBE9
oklch(93.6% 0.005 165)
-
Step 200
200
#D3DBD8
oklch(88.4% 0.01 171.8)
-
Step 300
300
#B6C5BE
oklch(81% 0.019 166.3)
-
Step 400
400
#8FA79D
oklch(70.7% 0.03 168.4)
-
Step 500
500
#749185
oklch(63.1% 0.037 168)
-
Step 600
600
#5C7B6F
oklch(55.5% 0.04 169.1)
-
Step 700
700
#4B685C
oklch(49.1% 0.039 167.3)
-
Step 800
800
#3E554C
oklch(42.8% 0.032 168.8)
-
Step 900
900 (this color)
#33443D
oklch(37% 0.025 167.9)
-
Step 950
950
#1F2925
oklch(27% 0.016 168.8)
#33443D 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) | #43423D | 0.025 |
| Deuteranopia (no green cones) | #403F3D | 0.025 |
| Tritanopia (no blue cones) | #2F4442 | 0.010 |
| Achromatopsia (no color) | #404040 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33443D
#33443D
oklch(37% 0.025 167.9)
- #4A3A42
#4A3A42
oklch(36.9% 0.026 346.9)
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 #33443D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.020
- Onyx #343A40 ΔE 0.036
- Charcoal #264653 ΔE 0.038
- Dark Slate Gray #2F4F4F ΔE 0.039
- Dark Teal #014D4E ΔE 0.046
- Dark Grey Blue #29465B ΔE 0.051
- Dark Blue Green #005249 ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.054
Use #33443D 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.