#33433C
Closest named color: Charcoal Grey (#3C4142). oklch(36.6% 0.024 166.5), rgb(51, 67, 60).
Aa
White text reads best on this color (10.45:1).
About this color
#33433C is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.024. 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 10.45:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.00:1 |
| White text | 10.45:1 |
Values
| HEX | #33433C |
| RGB | rgb(51, 67, 60) |
| HSL | hsl(154, 14%, 23%) |
| OKLCH | oklch(36.6% 0.024 166.5) |
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 #33433C | 10.45:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #33433C | 2.00:1 | Fails | Lc 9.7 | Not readable |
| #33433C text on white | 10.45:1 | AAA | Lc 94.3 | Preferred for body text |
| #33433C text on black | 2.00:1 | Fails | Lc -8.3 | 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
#B6C4BE
oklch(80.8% 0.017 168.4)
-
Step 400
400
#90A79D
oklch(70.8% 0.029 167.4)
-
Step 500
500
#759185
oklch(63.1% 0.036 167.3)
-
Step 600
600
#5D7B6E
oklch(55.6% 0.04 166.5)
-
Step 700
700
#4D685C
oklch(49.2% 0.037 165.8)
-
Step 800
800
#3F554B
oklch(42.8% 0.032 165.3)
-
Step 900
900 (this color)
#33433C
oklch(36.6% 0.024 166.5)
-
Step 950
950
#202925
oklch(27.1% 0.015 166.5)
#33433C 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) | #42413C | 0.024 |
| Deuteranopia (no green cones) | #3F3F3C | 0.022 |
| Tritanopia (no blue cones) | #304341 | 0.009 |
| Achromatopsia (no color) | #3F3F3F | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33433C
#33433C
oklch(36.6% 0.024 166.5)
- #493A41
#493A41
oklch(36.7% 0.024 348.6)
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 #33433C, 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 0.033
- Charcoal #264653 ΔE 0.039
- Dark Slate Gray #2F4F4F ΔE 0.042
- Dark Teal #014D4E ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.053
- Dark Blue Green #005249 ΔE 0.055
Use #33433C 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.