#374751
Closest named color: Charcoal (#264653). oklch(38.8% 0.027 235.8), rgb(55, 71, 81).
Aa
White text reads best on this color (9.62:1).
About this color
#374751 is a dark close to neutral grey. In OKLCH its lightness is 39%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Charcoal (#264653), ΔE 0.022 away. White text reads best on it, at 9.62:1.
| Hue family | Neutrals |
| Lightness | dark (39%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Charcoal (#264653) |
| Black text | 2.18:1 |
| White text | 9.62:1 |
Values
| HEX | #374751 |
| RGB | rgb(55, 71, 81) |
| HSL | hsl(203, 19%, 27%) |
| OKLCH | oklch(38.8% 0.027 235.8) |
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 #374751 | 9.62:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #374751 | 2.18:1 | Fails | Lc 11.7 | Not readable |
| #374751 text on white | 9.62:1 | AAA | Lc 92.3 | Preferred for body text |
| #374751 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAED
oklch(93.5% 0.006 239.8)
-
Step 200
200
#D3DADF
oklch(88.4% 0.01 238.5)
-
Step 300
300
#B5C3CC
oklch(80.9% 0.02 235.8)
-
Step 400
400
#8EA4B2
oklch(70.6% 0.032 235.9)
-
Step 500
500
#728E9F
oklch(63.1% 0.041 234.9)
-
Step 600
600
#5A788A
oklch(55.6% 0.044 235)
-
Step 700
700
#4A6575
oklch(49.2% 0.041 234.7)
-
Step 800
800
#3D525F
oklch(42.6% 0.034 235.8)
-
Step 900
900 (this color)
#374751
oklch(38.8% 0.027 235.8)
-
Step 950
950
#1F282E
oklch(27.1% 0.017 237.4)
#374751 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) | #424652 | 0.017 |
| Deuteranopia (no green cones) | #3F4451 | 0.014 |
| Tritanopia (no blue cones) | #2F4A4A | 0.021 |
| Achromatopsia (no color) | #454545 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #374751
#374751
oklch(38.8% 0.027 235.8)
- #504137
#504137
oklch(38.8% 0.027 55.5)
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 #374751, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.022
- Dark Grey Blue #29465B ΔE 0.025
- Charcoal Grey #3C4142 ΔE 0.027
- Dark Slate Gray #2F4F4F ΔE 0.029
- Onyx #343A40 ΔE 0.045
- Dark Teal #014D4E ΔE 0.048
- Dark Blue Grey #1F3B4D ΔE 0.053
- Deep Teal #00555A ΔE 0.054
Use #374751 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.