#40483E
Closest named color: Charcoal Grey (#3C4142). oklch(39.1% 0.02 139.4), rgb(64, 72, 62).
Aa
White text reads best on this color (9.48:1).
About this color
#40483E 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 0.027 away. White text reads best on it, at 9.48:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #40483E |
| RGB | rgb(64, 72, 62) |
| HSL | hsl(108, 7%, 26%) |
| OKLCH | oklch(39.1% 0.02 139.4) |
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 #40483E | 9.48:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #40483E | 2.21:1 | Fails | Lc 12.0 | Not readable |
| #40483E text on white | 9.48:1 | AAA | Lc 92.0 | Preferred for body text |
| #40483E text on black | 2.21:1 | Fails | Lc -10.4 | 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E8EAE8
oklch(93.5% 0.003 145.5)
-
Step 200
200
#D6DAD5
oklch(88.4% 0.008 139.4)
-
Step 300
300
#BCC3BA
oklch(80.9% 0.015 138.7)
-
Step 400
400
#99A496
oklch(70.6% 0.024 139)
-
Step 500
500
#808E7D
oklch(63% 0.03 140.2)
-
Step 600
600
#6A7866
oklch(55.6% 0.032 138.7)
-
Step 700
700
#586555
oklch(49.1% 0.03 139.8)
-
Step 800
800
#485345
oklch(42.8% 0.027 139)
-
Step 900
900 (this color)
#40483E
oklch(39.1% 0.02 139.4)
-
Step 950
950
#232822
oklch(27% 0.013 140.5)
#40483E 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) | #49463D | 0.015 |
| Deuteranopia (no green cones) | #47453E | 0.014 |
| Tritanopia (no blue cones) | #404745 | 0.013 |
| Achromatopsia (no color) | #464646 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40483E
#40483E
oklch(39.1% 0.02 139.4)
- #4A424C
#4A424C
oklch(39.1% 0.02 319.5)
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 #40483E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.027
- Dark Slate Gray #2F4F4F ΔE 0.034
- Charcoal #264653 ΔE 0.050
- Onyx #343A40 ΔE 0.053
- Dark Teal #014D4E ΔE 0.057
- Dark Blue Green #005249 ΔE 0.058
- Dark Grey Blue #29465B ΔE 0.058
- Deep Teal #00555A ΔE 0.065
Use #40483E 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.