#374643
Closest named color: Charcoal Grey (#3C4142). oklch(38% 0.02 181.7), rgb(55, 70, 67).
Aa
White text reads best on this color (9.90:1).
About this color
#374643 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 0.017 away. White text reads best on it, at 9.90:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.11:1 |
| White text | 9.90:1 |
Values
| HEX | #374643 |
| RGB | rgb(55, 70, 67) |
| HSL | hsl(168, 12%, 25%) |
| OKLCH | oklch(38% 0.02 181.7) |
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 #374643 | 9.90:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #374643 | 2.11:1 | Fails | Lc 10.9 | Not readable |
| #374643 text on white | 9.90:1 | AAA | Lc 93.0 | Preferred for body text |
| #374643 text on black | 2.11:1 | Fails | Lc -9.5 | 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
#E7EBEA
oklch(93.7% 0.004 179.7)
-
Step 200
200
#D4DBD9
oklch(88.5% 0.008 177.3)
-
Step 300
300
#B7C4C1
oklch(80.9% 0.015 180.6)
-
Step 400
400
#91A6A1
oklch(70.7% 0.025 179.6)
-
Step 500
500
#76908B
oklch(63.2% 0.03 182.3)
-
Step 600
600
#5E7A75
oklch(55.6% 0.033 183)
-
Step 700
700
#4E6762
oklch(49.2% 0.031 181.4)
-
Step 800
800
#405450
oklch(42.8% 0.026 181.4)
-
Step 900
900 (this color)
#374643
oklch(38% 0.02 181.7)
-
Step 950
950
#202927
oklch(27.2% 0.013 180.3)
#374643 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) | #454443 | 0.022 |
| Deuteranopia (no green cones) | #424243 | 0.020 |
| Tritanopia (no blue cones) | #334745 | 0.006 |
| Achromatopsia (no color) | #434343 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374643
#374643
oklch(38% 0.02 181.7)
- #4C3E41
#4C3E41
oklch(38% 0.02 3.6)
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 #374643, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.017
- Dark Slate Gray #2F4F4F ΔE 0.030
- Charcoal #264653 ΔE 0.033
- Onyx #343A40 ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.044
- Dark Teal #014D4E ΔE 0.046
- Dark Blue Green #005249 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.057
Use #374643 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.