#334042
Closest named color: Charcoal Grey (#3C4142). oklch(36.1% 0.017 207.8), rgb(51, 64, 66).
Aa
White text reads best on this color (10.75:1).
About this color
#334042 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.015 away. White text reads best on it, at 10.75:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.95:1 |
| White text | 10.75:1 |
Values
| HEX | #334042 |
| RGB | rgb(51, 64, 66) |
| HSL | hsl(188, 13%, 23%) |
| OKLCH | oklch(36.1% 0.017 207.8) |
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 #334042 | 10.75:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #334042 | 1.95:1 | Fails | Lc 9.0 | Not readable |
| #334042 text on white | 10.75:1 | AAA | Lc 94.9 | Preferred for body text |
| #334042 text on black | 1.95:1 | Fails | Lc -7.7 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D4DADB
oklch(88.4% 0.007 208.8)
-
Step 300
300
#B8C3C5
oklch(80.9% 0.012 209.8)
-
Step 400
400
#92A4A7
oklch(70.6% 0.021 208.7)
-
Step 500
500
#788E92
oklch(63.1% 0.026 209.8)
-
Step 600
600
#60787C
oklch(55.5% 0.029 208.8)
-
Step 700
700
#4F6569
oklch(49% 0.027 209.9)
-
Step 800
800
#415355
oklch(42.8% 0.023 204.7)
-
Step 900
900 (this color)
#334042
oklch(36.1% 0.017 207.8)
-
Step 950
950
#202829
oklch(27% 0.011 205.8)
#334042 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) | #3E3F42 | 0.017 |
| Deuteranopia (no green cones) | #3B3D42 | 0.015 |
| Tritanopia (no blue cones) | #2F4141 | 0.007 |
| Achromatopsia (no color) | #3E3E3E | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334042
#334042
oklch(36.1% 0.017 207.8)
- #463A38
#463A38
oklch(36.1% 0.017 29.1)
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 #334042, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.015
- Onyx #343A40 ΔE 0.019
- Charcoal #264653 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.042
- Dark Slate Gray #2F4F4F ΔE 0.047
- Gunmetal #293241 ΔE 0.051
- Dark Teal #014D4E ΔE 0.052
Use #334042 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.