#39454D
Closest named color: Charcoal Grey (#3C4142). oklch(38.3% 0.021 237.3), rgb(57, 69, 77).
Aa
White text reads best on this color (9.84:1).
About this color
#39454D is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.021. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.019 away. White text reads best on it, at 9.84:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.021) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.13:1 |
| White text | 9.84:1 |
Values
| HEX | #39454D |
| RGB | rgb(57, 69, 77) |
| HSL | hsl(204, 15%, 26%) |
| OKLCH | oklch(38.3% 0.021 237.3) |
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 #39454D | 9.84:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #39454D | 2.13:1 | Fails | Lc 11.1 | Not readable |
| #39454D text on white | 9.84:1 | AAA | Lc 92.9 | Preferred for body text |
| #39454D text on black | 2.13:1 | Fails | Lc -9.6 | 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
#E7EAEC
oklch(93.5% 0.004 236.5)
-
Step 200
200
#D4DADE
oklch(88.5% 0.009 236.6)
-
Step 300
300
#B8C2CA
oklch(80.9% 0.016 241.8)
-
Step 400
400
#93A3AE
oklch(70.6% 0.024 237.8)
-
Step 500
500
#788D9B
oklch(63.2% 0.032 237.2)
-
Step 600
600
#617785
oklch(55.7% 0.034 236.1)
-
Step 700
700
#506471
oklch(49.2% 0.032 236.8)
-
Step 800
800
#42515C
oklch(42.6% 0.026 240)
-
Step 900
900 (this color)
#39454D
oklch(38.3% 0.021 237.3)
-
Step 950
950
#21282C
oklch(27.2% 0.012 232.9)
#39454D 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) | #42454D | 0.014 |
| Deuteranopia (no green cones) | #3F424D | 0.013 |
| Tritanopia (no blue cones) | #334747 | 0.017 |
| Achromatopsia (no color) | #434343 | 0.021 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39454D
#39454D
oklch(38.3% 0.021 237.3)
- #4C4138
#4C4138
oklch(38.4% 0.021 61.4)
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 #39454D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.019
- Charcoal #264653 ΔE 0.025
- Dark Grey Blue #29465B ΔE 0.030
- Dark Slate Gray #2F4F4F ΔE 0.033
- Onyx #343A40 ΔE 0.039
- Dark Teal #014D4E ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.051
- Deep Teal #00555A ΔE 0.060
Use #39454D 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.