#40483F
Closest named color: Charcoal Grey (#3C4142). oklch(39.1% 0.018 142.1), rgb(64, 72, 63).
Aa
White text reads best on this color (9.47:1).
About this color
#40483F is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.018. 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 9.47:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.21:1 |
| White text | 9.47:1 |
Values
| HEX | #40483F |
| RGB | rgb(64, 72, 63) |
| HSL | hsl(113, 7%, 26%) |
| OKLCH | oklch(39.1% 0.018 142.1) |
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 #40483F | 9.47:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #40483F | 2.21:1 | Fails | Lc 12.0 | Not readable |
| #40483F text on white | 9.47:1 | AAA | Lc 91.9 | Preferred for body text |
| #40483F text on black | 2.21:1 | Fails | Lc -10.5 | 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
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAE8
oklch(93.5% 0.003 145.5)
-
Step 200
200
#D6DAD6
oklch(88.4% 0.007 145.5)
-
Step 300
300
#BCC3BB
oklch(80.9% 0.013 141.8)
-
Step 400
400
#99A498
oklch(70.6% 0.021 143)
-
Step 500
500
#808E7E
oklch(63.1% 0.029 141.7)
-
Step 600
600
#6A7868
oklch(55.6% 0.029 141.7)
-
Step 700
700
#586556
oklch(49.1% 0.028 141.4)
-
Step 800
800
#485247
oklch(42.6% 0.022 142.7)
-
Step 900
900 (this color)
#40483F
oklch(39.1% 0.018 142.1)
-
Step 950
950
#232823
oklch(27% 0.012 145.2)
#40483F 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) | #49463F | 0.015 |
| Deuteranopia (no green cones) | #47453F | 0.014 |
| Tritanopia (no blue cones) | #404745 | 0.012 |
| Achromatopsia (no color) | #464646 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40483F
#40483F
oklch(39.1% 0.018 142.1)
- #4A424B
#4A424B
oklch(39% 0.018 322.5)
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 #40483F, 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 0.033
- Charcoal #264653 ΔE 0.048
- Onyx #343A40 ΔE 0.053
- Dark Teal #014D4E ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.057
- Dark Blue Green #005249 ΔE 0.058
- Deep Teal #00555A ΔE 0.065
Use #40483F 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.