#39434C
Closest named color: Charcoal Grey (#3C4142). oklch(37.7% 0.02 245.5), rgb(57, 67, 76).
Aa
White text reads best on this color (10.09:1).
About this color
#39434C is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.016 away. White text reads best on it, at 10.09:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.08:1 |
| White text | 10.09:1 |
Values
| HEX | #39434C |
| RGB | rgb(57, 67, 76) |
| HSL | hsl(208, 14%, 26%) |
| OKLCH | oklch(37.7% 0.02 245.5) |
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 #39434C | 10.09:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #39434C | 2.08:1 | Fails | Lc 10.5 | Not readable |
| #39434C text on white | 10.09:1 | AAA | Lc 93.4 | Preferred for body text |
| #39434C text on black | 2.08:1 | Fails | Lc -9.1 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E7EAED
oklch(93.6% 0.005 247.9)
-
Step 200
200
#D5DADE
oklch(88.6% 0.008 241.7)
-
Step 300
300
#B9C2CA
oklch(80.9% 0.015 244.8)
-
Step 400
400
#95A3AF
oklch(70.8% 0.024 243.9)
-
Step 500
500
#7A8C9C
oklch(63.1% 0.032 245.2)
-
Step 600
600
#637686
oklch(55.6% 0.034 243.8)
-
Step 700
700
#526372
oklch(49.1% 0.032 245.1)
-
Step 800
800
#43515D
oklch(42.8% 0.027 244.3)
-
Step 900
900 (this color)
#39434C
oklch(37.7% 0.02 245.5)
-
Step 950
950
#21272C
oklch(26.9% 0.013 243.3)
#39434C 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) | #40434C | 0.011 |
| Deuteranopia (no green cones) | #3D414C | 0.008 |
| Tritanopia (no blue cones) | #344546 | 0.016 |
| Achromatopsia (no color) | #424242 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39434C
#39434C
oklch(37.7% 0.02 245.5)
- #494037
#494037
oklch(37.8% 0.019 67.2)
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 #39434C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.016
- Charcoal #264653 ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.030
- Onyx #343A40 ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.047
- Dark Teal #014D4E ΔE 0.054
- Midnight Green #073B4C ΔE 0.063
Use #39434C 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.