#304149
Closest named color: Charcoal Grey (#3C4142). oklch(36.4% 0.026 228.4), rgb(48, 65, 73).
Aa
White text reads best on this color (10.61:1).
About this color
#304149 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.021 away. White text reads best on it, at 10.61:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.97:1 |
| White text | 10.61:1 |
Values
| HEX | #304149 |
| RGB | rgb(48, 65, 73) |
| HSL | hsl(199, 21%, 24%) |
| OKLCH | oklch(36.4% 0.026 228.4) |
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 #304149 | 10.61:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #304149 | 1.97:1 | Fails | Lc 9.3 | Not readable |
| #304149 text on white | 10.61:1 | AAA | Lc 94.6 | Preferred for body text |
| #304149 text on black | 1.97:1 | Fails | Lc -8.0 | 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
#E6EBED
oklch(93.7% 0.006 223.5)
-
Step 200
200
#D2DBDF
oklch(88.6% 0.011 226)
-
Step 300
300
#B4C3CB
oklch(80.8% 0.02 230.8)
-
Step 400
400
#8DA5B0
oklch(70.7% 0.031 227.2)
-
Step 500
500
#718F9D
oklch(63.2% 0.04 228)
-
Step 600
600
#597987
oklch(55.7% 0.043 226.7)
-
Step 700
700
#496573
oklch(49% 0.04 230.2)
-
Step 800
800
#3C535D
oklch(42.7% 0.033 226.6)
-
Step 900
900 (this color)
#304149
oklch(36.4% 0.026 228.4)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#304149 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) | #3D4049 | 0.020 |
| Deuteranopia (no green cones) | #393D49 | 0.018 |
| Tritanopia (no blue cones) | #284343 | 0.018 |
| Achromatopsia (no color) | #3E3E3E | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304149
#304149
oklch(36.4% 0.026 228.4)
- #4A3A32
#4A3A32
oklch(36.3% 0.026 48)
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 #304149, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.021
- Charcoal #264653 ΔE 0.021
- Onyx #343A40 ΔE 0.023
- Dark Grey Blue #29465B ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.033
- Dark Slate Gray #2F4F4F ΔE 0.044
- Midnight Green #073B4C ΔE 0.048
- Dark Teal #014D4E ΔE 0.048
Use #304149 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.