#334037
Closest named color: Charcoal Grey (#3C4142). oklch(35.7% 0.023 154.9), rgb(51, 64, 55).
Aa
White text reads best on this color (10.88:1).
About this color
#334037 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.025 away. White text reads best on it, at 10.88:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.92:1 |
| White text | 10.88:1 |
Values
| HEX | #334037 |
| RGB | rgb(51, 64, 55) |
| HSL | hsl(138, 11%, 23%) |
| OKLCH | oklch(35.7% 0.023 154.9) |
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 #334037 | 10.88:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #334037 | 1.92:1 | Fails | Lc 8.7 | Not readable |
| #334037 text on white | 10.88:1 | AAA | Lc 95.2 | Preferred for body text |
| #334037 text on black | 1.92:1 | Fails | Lc -7.4 | 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
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D4DBD6
oklch(88.5% 0.01 155.1)
-
Step 300
300
#B8C4BC
oklch(80.9% 0.017 156.8)
-
Step 400
400
#94A699
oklch(70.7% 0.028 154.2)
-
Step 500
500
#799080
oklch(63% 0.035 154.9)
-
Step 600
600
#627A6A
oklch(55.5% 0.037 155.8)
-
Step 700
700
#516758
oklch(49.1% 0.036 155.1)
-
Step 800
800
#425448
oklch(42.7% 0.03 155.7)
-
Step 900
900 (this color)
#334037
oklch(35.7% 0.023 154.9)
-
Step 950
950
#212923
oklch(27.1% 0.016 152.8)
#334037 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) | #403E37 | 0.021 |
| Deuteranopia (no green cones) | #3E3C37 | 0.021 |
| Tritanopia (no blue cones) | #31403D | 0.010 |
| Achromatopsia (no color) | #3D3D3D | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #334037
#334037
oklch(35.7% 0.023 154.9)
- #443841
#443841
oklch(35.7% 0.022 334.9)
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 #334037, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.025
- Onyx #343A40 ΔE 0.030
- Charcoal #264653 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.053
- Dark Teal #014D4E ΔE 0.055
- Pakistan Green #283618 ΔE 0.056
- Evergreen #05472A ΔE 0.057
Use #334037 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.