#3E4740
Closest named color: Charcoal Grey (#3C4142). oklch(38.7% 0.017 152.1), rgb(62, 71, 64).
Aa
White text reads best on this color (9.63:1).
About this color
#3E4740 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.022 away. White text reads best on it, at 9.63:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.18:1 |
| White text | 9.63:1 |
Values
| HEX | #3E4740 |
| RGB | rgb(62, 71, 64) |
| HSL | hsl(133, 7%, 26%) |
| OKLCH | oklch(38.7% 0.017 152.1) |
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 #3E4740 | 9.63:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #3E4740 | 2.18:1 | Fails | Lc 11.6 | Not readable |
| #3E4740 text on white | 9.63:1 | AAA | Lc 92.3 | Preferred for body text |
| #3E4740 text on black | 2.18:1 | Fails | Lc -10.1 | 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
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E8EAE9
oklch(93.5% 0.003 165.1)
-
Step 200
200
#D6DAD7
oklch(88.4% 0.006 153.8)
-
Step 300
300
#BBC3BD
oklch(80.9% 0.012 153.6)
-
Step 400
400
#98A49B
oklch(70.6% 0.019 153.4)
-
Step 500
500
#7F8E82
oklch(63.1% 0.025 151.4)
-
Step 600
600
#68786B
oklch(55.6% 0.027 150.8)
-
Step 700
700
#56655A
oklch(49.1% 0.025 153.6)
-
Step 800
800
#475349
oklch(42.8% 0.022 150.1)
-
Step 900
900 (this color)
#3E4740
oklch(38.7% 0.017 152.1)
-
Step 950
950
#232824
oklch(27% 0.01 151.4)
#3E4740 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) | #474540 | 0.015 |
| Deuteranopia (no green cones) | #454440 | 0.014 |
| Tritanopia (no blue cones) | #3D4745 | 0.008 |
| Achromatopsia (no color) | #454545 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3E4740
#3E4740
oklch(38.7% 0.017 152.1)
- #4A4148
#4A4148
oklch(38.7% 0.017 333.5)
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 #3E4740, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.022
- Dark Slate Gray #2F4F4F ΔE 0.032
- Charcoal #264653 ΔE 0.044
- Onyx #343A40 ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.053
- Dark Teal #014D4E ΔE 0.054
- Dark Blue Green #005249 ΔE 0.057
- Deep Teal #00555A ΔE 0.064
Use #3E4740 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.