#40463B
Closest named color: Charcoal Grey (#3C4142). oklch(38.5% 0.02 130.8), rgb(64, 70, 59).
Aa
White text reads best on this color (9.73:1).
About this color
#40463B is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.024 away. White text reads best on it, at 9.73:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.15:1 |
| White text | 9.73:1 |
Values
| HEX | #40463B |
| RGB | rgb(64, 70, 59) |
| HSL | hsl(93, 9%, 25%) |
| OKLCH | oklch(38.5% 0.02 130.8) |
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 #40463B | 9.73:1 | AAA | Lc -96.8 | Preferred for body text |
| Black text on #40463B | 2.15:1 | Fails | Lc 11.4 | Not readable |
| #40463B text on white | 9.73:1 | AAA | Lc 92.6 | Preferred for body text |
| #40463B text on black | 2.15:1 | Fails | Lc -9.9 | 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E9EAE7
oklch(93.5% 0.004 121.6)
-
Step 200
200
#D7DAD5
oklch(88.5% 0.007 132.4)
-
Step 300
300
#BDC3B9
oklch(81% 0.015 132.5)
-
Step 400
400
#9BA495
oklch(70.7% 0.024 132.6)
-
Step 500
500
#838E7A
oklch(63.2% 0.032 130.9)
-
Step 600
600
#6D7863
oklch(55.7% 0.034 130.1)
-
Step 700
700
#5B6552
oklch(49.2% 0.032 130.2)
-
Step 800
800
#4A5243
oklch(42.7% 0.026 130.4)
-
Step 900
900 (this color)
#40463B
oklch(38.5% 0.02 130.8)
-
Step 950
950
#242821
oklch(27% 0.014 131.7)
#40463B 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) | #47443A | 0.012 |
| Deuteranopia (no green cones) | #46443B | 0.011 |
| Tritanopia (no blue cones) | #404543 | 0.015 |
| Achromatopsia (no color) | #444444 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40463B
#40463B
oklch(38.5% 0.02 130.8)
- #47414C
#47414C
oklch(38.5% 0.02 309.8)
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 #40463B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.039
- Onyx #343A40 ΔE 0.049
- Charcoal #264653 ΔE 0.051
- Dark Teal #014D4E ΔE 0.059
- Dark Grey Blue #29465B ΔE 0.060
- Dark Blue Green #005249 ΔE 0.061
- Deep Teal #00555A ΔE 0.070
Use #40463B 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.