#334039
Closest named color: Charcoal Grey (#3C4142). oklch(35.7% 0.021 161.6), rgb(51, 64, 57).
Aa
White text reads best on this color (10.86:1).
About this color
#334039 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.022 away. White text reads best on it, at 10.86:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.93:1 |
| White text | 10.86:1 |
Values
| HEX | #334039 |
| RGB | rgb(51, 64, 57) |
| HSL | hsl(148, 11%, 23%) |
| OKLCH | oklch(35.7% 0.021 161.6) |
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 #334039 | 10.86:1 | AAA | Lc -99.0 | Preferred for body text |
| Black text on #334039 | 1.93:1 | Fails | Lc 8.7 | Not readable |
| #334039 text on white | 10.86:1 | AAA | Lc 95.2 | Preferred for body text |
| #334039 text on black | 1.93:1 | Fails | Lc -7.5 | 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
#D4DBD7
oklch(88.5% 0.009 161.3)
-
Step 300
300
#B8C4BD
oklch(80.9% 0.016 160.5)
-
Step 400
400
#94A69C
oklch(70.8% 0.025 161.5)
-
Step 500
500
#799083
oklch(63.1% 0.033 160.6)
-
Step 600
600
#627A6D
oklch(55.6% 0.034 161.4)
-
Step 700
700
#51675B
oklch(49.2% 0.033 161.1)
-
Step 800
800
#42544A
oklch(42.7% 0.028 160.6)
-
Step 900
900 (this color)
#334039
oklch(35.7% 0.021 161.6)
-
Step 950
950
#212924
oklch(27.1% 0.015 157.9)
#334039 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) | #403E39 | 0.021 |
| Deuteranopia (no green cones) | #3D3C39 | 0.020 |
| Tritanopia (no blue cones) | #31403E | 0.009 |
| Achromatopsia (no color) | #3D3D3D | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334039
#334039
oklch(35.7% 0.021 161.6)
- #443840
#443840
oklch(35.6% 0.021 338.4)
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 #334039, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.022
- Onyx #343A40 ΔE 0.027
- Charcoal #264653 ΔE 0.043
- Dark Blue Grey #1F3B4D ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.051
- Dark Teal #014D4E ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.056
- Gunmetal #293241 ΔE 0.057
Use #334039 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.