#374547
Closest named color: Charcoal Grey (#3C4142). oklch(37.9% 0.018 207), rgb(55, 69, 71).
Aa
White text reads best on this color (9.97:1).
About this color
#374547 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.014 away. White text reads best on it, at 9.97:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.10:1 |
| White text | 9.97:1 |
Values
| HEX | #374547 |
| RGB | rgb(55, 69, 71) |
| HSL | hsl(188, 13%, 25%) |
| OKLCH | oklch(37.9% 0.018 207) |
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 #374547 | 9.97:1 | AAA | Lc -97.3 | Preferred for body text |
| Black text on #374547 | 2.10:1 | Fails | Lc 10.8 | Not readable |
| #374547 text on white | 9.97:1 | AAA | Lc 93.2 | Preferred for body text |
| #374547 text on black | 2.10:1 | Fails | Lc -9.3 | 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
#E7EBEB
oklch(93.7% 0.004 197.1)
-
Step 200
200
#D4DBDC
oklch(88.6% 0.008 207.1)
-
Step 300
300
#B7C3C5
oklch(80.9% 0.014 208.8)
-
Step 400
400
#91A5A7
oklch(70.7% 0.023 204)
-
Step 500
500
#768F92
oklch(63.2% 0.029 205.4)
-
Step 600
600
#5F797C
oklch(55.7% 0.03 205)
-
Step 700
700
#4E6669
oklch(49.2% 0.029 205.7)
-
Step 800
800
#405356
oklch(42.7% 0.024 208.2)
-
Step 900
900 (this color)
#374547
oklch(37.9% 0.018 207)
-
Step 950
950
#202829
oklch(27% 0.011 205.8)
#374547 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) | #434447 | 0.019 |
| Deuteranopia (no green cones) | #404247 | 0.016 |
| Tritanopia (no blue cones) | #324646 | 0.008 |
| Achromatopsia (no color) | #424242 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374547
#374547
oklch(37.9% 0.018 207)
- #4B3F3D
#4B3F3D
oklch(38% 0.017 29.1)
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 #374547, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.014
- Charcoal #264653 ΔE 0.027
- Dark Slate Gray #2F4F4F ΔE 0.031
- Onyx #343A40 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.037
- Dark Teal #014D4E ΔE 0.047
- Dark Blue Grey #1F3B4D ΔE 0.052
- Dark Blue Green #005249 ΔE 0.056
Use #374547 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.