#34403D
Closest named color: Charcoal Grey (#3C4142). oklch(36% 0.017 178.5), rgb(52, 64, 61).
Aa
White text reads best on this color (10.78:1).
About this color
#34403D 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 0.016 away. White text reads best on it, at 10.78:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.94:1 |
| White text | 10.78:1 |
Values
| HEX | #34403D |
| RGB | rgb(52, 64, 61) |
| HSL | hsl(165, 10%, 23%) |
| OKLCH | oklch(36% 0.017 178.5) |
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 #34403D | 10.78:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #34403D | 1.94:1 | Fails | Lc 8.9 | Not readable |
| #34403D text on white | 10.78:1 | AAA | Lc 95.0 | Preferred for body text |
| #34403D text on black | 1.94:1 | Fails | Lc -7.6 | 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
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D5DBD9
oklch(88.6% 0.007 174.4)
-
Step 300
300
#B9C3C0
oklch(80.9% 0.012 176.2)
-
Step 400
400
#94A5A1
oklch(70.7% 0.02 180)
-
Step 500
500
#7A8F89
oklch(63.2% 0.026 176.3)
-
Step 600
600
#627973
oklch(55.6% 0.028 177.6)
-
Step 700
700
#516661
oklch(49.1% 0.026 179)
-
Step 800
800
#43534F
oklch(42.7% 0.021 178.4)
-
Step 900
900 (this color)
#34403D
oklch(36% 0.017 178.5)
-
Step 950
950
#212826
oklch(26.9% 0.011 176.4)
#34403D 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) | #3F3E3D | 0.018 |
| Deuteranopia (no green cones) | #3D3D3D | 0.017 |
| Tritanopia (no blue cones) | #31403F | 0.005 |
| Achromatopsia (no color) | #3D3D3D | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #34403D
#34403D
oklch(36% 0.017 178.5)
- #453A3D
#453A3D
oklch(36.1% 0.016 359.6)
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 #34403D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.016
- Onyx #343A40 ΔE 0.023
- Charcoal #264653 ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
- Dark Teal #014D4E ΔE 0.054
- Gunmetal #293241 ΔE 0.055
Use #34403D 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.