#39453F
Closest named color: Charcoal Grey (#3C4142). oklch(37.8% 0.019 163.8), rgb(57, 69, 63).
Aa
White text reads best on this color (10.01:1).
About this color
#39453F is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.019. 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 10.01:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.09:1 |
| White text | 10.01:1 |
Values
| HEX | #39453F |
| RGB | rgb(57, 69, 63) |
| HSL | hsl(150, 10%, 25%) |
| OKLCH | oklch(37.8% 0.019 163.8) |
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 #39453F | 10.01:1 | AAA | Lc -97.4 | Preferred for body text |
| Black text on #39453F | 2.09:1 | Fails | Lc 10.7 | Not readable |
| #39453F text on white | 10.01:1 | AAA | Lc 93.3 | Preferred for body text |
| #39453F text on black | 2.09:1 | Fails | Lc -9.2 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBE9
oklch(93.6% 0.005 165)
-
Step 200
200
#D5DBD8
oklch(88.6% 0.008 164.9)
-
Step 300
300
#B9C4BE
oklch(81% 0.015 162.4)
-
Step 400
400
#95A59D
oklch(70.7% 0.021 164.3)
-
Step 500
500
#7A8F85
oklch(63% 0.028 165.1)
-
Step 600
600
#63796E
oklch(55.5% 0.031 163.6)
-
Step 700
700
#52665C
oklch(49.1% 0.029 163.5)
-
Step 800
800
#43534B
oklch(42.6% 0.024 163.6)
-
Step 900
900 (this color)
#39453F
oklch(37.8% 0.019 163.8)
-
Step 950
950
#212825
oklch(26.9% 0.011 167.8)
#39453F 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) | #45433F | 0.020 |
| Deuteranopia (no green cones) | #42423F | 0.016 |
| Tritanopia (no blue cones) | #374543 | 0.007 |
| Achromatopsia (no color) | #424242 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39453F
#39453F
oklch(37.8% 0.019 163.8)
- #493E44
#493E44
oklch(37.7% 0.018 344)
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 #39453F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.016
- Dark Slate Gray #2F4F4F ΔE 0.035
- Charcoal #264653 ΔE 0.039
- Onyx #343A40 ΔE 0.039
- Dark Grey Blue #29465B ΔE 0.050
- Dark Teal #014D4E ΔE 0.050
- Dark Blue Green #005249 ΔE 0.055
- Dark Blue Grey #1F3B4D ΔE 0.060
Use #39453F 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.