#35404B
Closest named color: Charcoal Grey (#3C4142). oklch(36.6% 0.024 248.5), rgb(53, 64, 75).
Aa
White text reads best on this color (10.57:1).
About this color
#35404B 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 0.020 away. White text reads best on it, at 10.57:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.98:1 |
| White text | 10.57:1 |
Values
| HEX | #35404B |
| RGB | rgb(53, 64, 75) |
| HSL | hsl(210, 17%, 25%) |
| OKLCH | oklch(36.6% 0.024 248.5) |
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 #35404B | 10.57:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #35404B | 1.98:1 | Fails | Lc 9.4 | Not readable |
| #35404B text on white | 10.57:1 | AAA | Lc 94.5 | Preferred for body text |
| #35404B text on black | 1.98:1 | Fails | Lc -8.1 | 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
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D4DAE0
oklch(88.6% 0.011 247.9)
-
Step 300
300
#B8C2CC
oklch(80.9% 0.018 248)
-
Step 400
400
#93A3B2
oklch(70.8% 0.028 246.5)
-
Step 500
500
#798C9F
oklch(63.2% 0.036 248.4)
-
Step 600
600
#61768A
oklch(55.6% 0.04 247.3)
-
Step 700
700
#506375
oklch(49.1% 0.037 247.2)
-
Step 800
800
#42515F
oklch(42.8% 0.03 246.7)
-
Step 900
900 (this color)
#35404B
oklch(36.6% 0.024 248.5)
-
Step 950
950
#21272E
oklch(27% 0.016 252.4)
#35404B 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) | #3C404C | 0.011 |
| Deuteranopia (no green cones) | #393E4B | 0.008 |
| Tritanopia (no blue cones) | #2F4344 | 0.020 |
| Achromatopsia (no color) | #3F3F3F | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #35404B
#35404B
oklch(36.6% 0.024 248.5)
- #473D31
#473D31
oklch(36.7% 0.024 72)
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 #35404B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.020
- Onyx #343A40 ΔE 0.023
- Charcoal #264653 ΔE 0.025
- Dark Grey Blue #29465B ΔE 0.030
- Dark Blue Grey #1F3B4D ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.048
- Gunmetal #293241 ΔE 0.051
- Midnight Green #073B4C ΔE 0.053
Use #35404B 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.