#374347
Closest named color: Charcoal Grey (#3C4142). oklch(37.4% 0.017 220), rgb(55, 67, 71).
Aa
White text reads best on this color (10.21:1).
About this color
#374347 is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.011 away. White text reads best on it, at 10.21:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.05:1 |
| White text | 10.21:1 |
Values
| HEX | #374347 |
| RGB | rgb(55, 67, 71) |
| HSL | hsl(195, 13%, 25%) |
| OKLCH | oklch(37.4% 0.017 220) |
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 #374347 | 10.21:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #374347 | 2.05:1 | Fails | Lc 10.2 | Not readable |
| #374347 text on white | 10.21:1 | AAA | Lc 93.7 | Preferred for body text |
| #374347 text on black | 2.05:1 | Fails | Lc -8.8 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D4DADC
oklch(88.4% 0.007 219.6)
-
Step 300
300
#B8C3C6
oklch(81% 0.013 215.8)
-
Step 400
400
#93A4A9
oklch(70.7% 0.021 217.3)
-
Step 500
500
#798E95
oklch(63.3% 0.026 219.9)
-
Step 600
600
#61787F
oklch(55.7% 0.029 218.2)
-
Step 700
700
#50656B
oklch(49.2% 0.027 217)
-
Step 800
800
#425257
oklch(42.7% 0.022 218.7)
-
Step 900
900 (this color)
#374347
oklch(37.4% 0.017 220)
-
Step 950
950
#21282A
oklch(27.1% 0.011 216.9)
#374347 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) | #404247 | 0.014 |
| Deuteranopia (no green cones) | #3E4047 | 0.014 |
| Tritanopia (no blue cones) | #324444 | 0.010 |
| Achromatopsia (no color) | #414141 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374347
#374347
oklch(37.4% 0.017 220)
- #493E3A
#493E3A
oklch(37.4% 0.017 41)
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 #374347, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.011
- Charcoal #264653 ΔE 0.027
- Onyx #343A40 ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.036
- Dark Slate Gray #2F4F4F ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.047
- Dark Teal #014D4E ΔE 0.050
- Midnight Green #073B4C ΔE 0.061
Use #374347 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.