#304145
Closest named color: Charcoal Grey (#3C4142). oklch(36.2% 0.023 213.7), rgb(48, 65, 69).
Aa
White text reads best on this color (10.67:1).
About this color
#304145 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.018 away. White text reads best on it, at 10.67:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.96:1 |
| White text | 10.67:1 |
Values
| HEX | #304145 |
| RGB | rgb(48, 65, 69) |
| HSL | hsl(191, 18%, 23%) |
| OKLCH | oklch(36.2% 0.023 213.7) |
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 #304145 | 10.67:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #304145 | 1.96:1 | Fails | Lc 9.2 | Not readable |
| #304145 text on white | 10.67:1 | AAA | Lc 94.7 | Preferred for body text |
| #304145 text on black | 1.96:1 | Fails | Lc -7.9 | 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
#E6EBEC
oklch(93.7% 0.006 211)
-
Step 200
200
#D2DBDD
oklch(88.5% 0.01 212.5)
-
Step 300
300
#B5C4C7
oklch(81% 0.017 211)
-
Step 400
400
#8EA5AB
oklch(70.6% 0.027 215.2)
-
Step 500
500
#728F96
oklch(63% 0.034 214.1)
-
Step 600
600
#5A7981
oklch(55.5% 0.038 215.4)
-
Step 700
700
#49666D
oklch(49% 0.036 214.3)
-
Step 800
800
#3C5359
oklch(42.6% 0.03 215.6)
-
Step 900
900 (this color)
#304145
oklch(36.2% 0.023 213.7)
-
Step 950
950
#1E282B
oklch(26.9% 0.015 218)
#304145 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) | #3E4045 | 0.021 |
| Deuteranopia (no green cones) | #3A3D45 | 0.019 |
| Tritanopia (no blue cones) | #294342 | 0.013 |
| Achromatopsia (no color) | #3E3E3E | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304145
#304145
oklch(36.2% 0.023 213.7)
- #493A36
#493A36
oklch(36.3% 0.022 35.4)
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 #304145, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.018
- Onyx #343A40 ΔE 0.022
- Charcoal #264653 ΔE 0.026
- Dark Blue Grey #1F3B4D ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.037
- Dark Slate Gray #2F4F4F ΔE 0.044
- Dark Teal #014D4E ΔE 0.047
- Midnight Green #073B4C ΔE 0.049
Use #304145 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.