#403B45
Closest named color: Charcoal Grey (#3C4142). oklch(36.1% 0.018 307.9), rgb(64, 59, 69).
Aa
White text reads best on this color (10.88:1).
About this color
#403B45 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.018. 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 10.88:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.92:1 |
| White text | 10.88:1 |
Values
| HEX | #403B45 |
| RGB | rgb(64, 59, 69) |
| HSL | hsl(270, 8%, 25%) |
| OKLCH | oklch(36.1% 0.018 307.9) |
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 #403B45 | 10.88:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #403B45 | 1.92:1 | Fails | Lc 8.7 | Not readable |
| #403B45 text on white | 10.88:1 | AAA | Lc 95.2 | Preferred for body text |
| #403B45 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
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#EAE9EC
oklch(93.6% 0.004 301.4)
-
Step 200
200
#DAD8DD
oklch(88.5% 0.007 304.2)
-
Step 300
300
#C3BEC8
oklch(80.9% 0.015 308.3)
-
Step 400
400
#A49DAB
oklch(70.6% 0.022 308.1)
-
Step 500
500
#8E8597
oklch(63.1% 0.029 308)
-
Step 600
600
#786F81
oklch(55.6% 0.029 307.9)
-
Step 700
700
#655D6D
oklch(49.2% 0.027 307.9)
-
Step 800
800
#524C59
oklch(42.7% 0.022 306.3)
-
Step 900
900 (this color)
#403B45
oklch(36.1% 0.018 307.9)
-
Step 950
950
#28252B
oklch(27% 0.012 308)
#403B45 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) | #3A3D45 | 0.011 |
| Deuteranopia (no green cones) | #3A3D45 | 0.011 |
| Tritanopia (no blue cones) | #3F3C3E | 0.014 |
| Achromatopsia (no color) | #3D3D3D | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #403B45
#403B45
oklch(36.1% 0.018 307.9)
- #3B3F35
#3B3F35
oklch(36.1% 0.018 125.1)
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 #403B45, 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 0.023
- Charcoal #264653 ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.049
- Dark Grey Blue #29465B ΔE 0.050
- Gunmetal #293241 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.061
- Dark Slate Gray #2F4F4F ΔE 0.063
Use #403B45 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.