#39474F
Closest named color: Charcoal Grey (#3C4142). oklch(38.9% 0.023 233.2), rgb(57, 71, 79).
Aa
White text reads best on this color (9.59:1).
About this color
#39474F is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.023. 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 9.59:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.18:1 |
| White text | 9.59:1 |
Values
| HEX | #39474F |
| RGB | rgb(57, 71, 79) |
| HSL | hsl(202, 16%, 27%) |
| OKLCH | oklch(38.9% 0.023 233.2) |
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 #39474F | 9.59:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #39474F | 2.18:1 | Fails | Lc 11.7 | Not readable |
| #39474F text on white | 9.59:1 | AAA | Lc 92.2 | Preferred for body text |
| #39474F text on black | 2.18:1 | Fails | Lc -10.2 | 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
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D3DADE
oklch(88.4% 0.009 232.4)
-
Step 300
300
#B6C3CA
oklch(80.9% 0.017 231)
-
Step 400
400
#91A4AF
oklch(70.7% 0.027 233.2)
-
Step 500
500
#758D9B
oklch(63% 0.035 233.7)
-
Step 600
600
#5E7786
oklch(55.5% 0.037 234.7)
-
Step 700
700
#4D6472
oklch(49% 0.036 235.2)
-
Step 800
800
#3F525C
oklch(42.7% 0.029 231.2)
-
Step 900
900 (this color)
#39474F
oklch(38.9% 0.023 233.2)
-
Step 950
950
#20282C
oklch(27.1% 0.014 229.5)
#39474F 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) | #43464F | 0.015 |
| Deuteranopia (no green cones) | #40444F | 0.014 |
| Tritanopia (no blue cones) | #334949 | 0.017 |
| Achromatopsia (no color) | #454545 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39474F
#39474F
oklch(38.9% 0.023 233.2)
- #4F423A
#4F423A
oklch(39% 0.022 53.5)
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 #39474F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.024
- Charcoal #264653 ΔE 0.025
- Dark Slate Gray #2F4F4F ΔE 0.028
- Dark Grey Blue #29465B ΔE 0.029
- Onyx #343A40 ΔE 0.045
- Dark Teal #014D4E ΔE 0.049
- Deep Teal #00555A ΔE 0.056
- Dark Blue Grey #1F3B4D ΔE 0.056
Use #39474F 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.