#33434A
Closest named color: Charcoal Grey (#3C4142). oklch(37.2% 0.024 226.5), rgb(51, 67, 74).
Aa
White text reads best on this color (10.28:1).
About this color
#33434A 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 0.017 away. White text reads best on it, at 10.28:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.04:1 |
| White text | 10.28:1 |
Values
| HEX | #33434A |
| RGB | rgb(51, 67, 74) |
| HSL | hsl(198, 18%, 25%) |
| OKLCH | oklch(37.2% 0.024 226.5) |
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 #33434A | 10.28:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #33434A | 2.04:1 | Fails | Lc 10.1 | Not readable |
| #33434A text on white | 10.28:1 | AAA | Lc 93.9 | Preferred for body text |
| #33434A text on black | 2.04:1 | Fails | Lc -8.7 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D3DBDE
oklch(88.6% 0.01 222.1)
-
Step 300
300
#B5C3CA
oklch(80.9% 0.018 229.1)
-
Step 400
400
#8FA5AE
oklch(70.8% 0.028 224.4)
-
Step 500
500
#738E9B
oklch(63% 0.036 228.7)
-
Step 600
600
#5B7885
oklch(55.5% 0.039 227.2)
-
Step 700
700
#4A6571
oklch(49% 0.037 227.1)
-
Step 800
800
#3D535C
oklch(42.8% 0.031 225)
-
Step 900
900 (this color)
#33434A
oklch(37.2% 0.024 226.5)
-
Step 950
950
#1F282C
oklch(27% 0.015 226.6)
#33434A 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) | #3F424A | 0.018 |
| Deuteranopia (no green cones) | #3C3F4A | 0.018 |
| Tritanopia (no blue cones) | #2C4545 | 0.016 |
| Achromatopsia (no color) | #414141 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33434A
#33434A
oklch(37.2% 0.024 226.5)
- #4B3D36
#4B3D36
oklch(37.3% 0.023 48.1)
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 #33434A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.017
- Charcoal #264653 ΔE 0.020
- Dark Grey Blue #29465B ΔE 0.029
- Onyx #343A40 ΔE 0.029
- Dark Slate Gray #2F4F4F ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.041
- Dark Teal #014D4E ΔE 0.047
- Midnight Green #073B4C ΔE 0.055
Use #33434A 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.