#2F4243
Closest named color: Charcoal Grey (#3C4142). oklch(36.3% 0.024 200.2), rgb(47, 66, 67).
Aa
White text reads best on this color (10.59:1).
About this color
#2F4243 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.019 away. White text reads best on it, at 10.59:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.98:1 |
| White text | 10.59:1 |
Values
| HEX | #2F4243 |
| RGB | rgb(47, 66, 67) |
| HSL | hsl(183, 18%, 22%) |
| OKLCH | oklch(36.3% 0.024 200.2) |
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 #2F4243 | 10.59:1 | AAA | Lc -98.5 | Preferred for body text |
| Black text on #2F4243 | 1.98:1 | Fails | Lc 9.3 | Not readable |
| #2F4243 text on white | 10.59:1 | AAA | Lc 94.6 | Preferred for body text |
| #2F4243 text on black | 1.98:1 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E6EBEB
oklch(93.6% 0.005 197.1)
-
Step 200
200
#D2DBDC
oklch(88.5% 0.01 204.9)
-
Step 300
300
#B4C4C5
oklch(80.8% 0.018 201.3)
-
Step 400
400
#8CA6A8
oklch(70.6% 0.029 202.2)
-
Step 500
500
#709192
oklch(63.2% 0.037 198.6)
-
Step 600
600
#577B7D
oklch(55.7% 0.041 200.4)
-
Step 700
700
#476769
oklch(49% 0.037 200.9)
-
Step 800
800
#3B5456
oklch(42.6% 0.03 202.3)
-
Step 900
900 (this color)
#2F4243
oklch(36.3% 0.024 200.2)
-
Step 950
950
#1E2929
oklch(27.1% 0.015 196.3)
#2F4243 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) | #3F4043 | 0.024 |
| Deuteranopia (no green cones) | #3C3D43 | 0.024 |
| Tritanopia (no blue cones) | #284342 | 0.010 |
| Achromatopsia (no color) | #3F3F3F | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4243
#2F4243
oklch(36.3% 0.024 200.2)
- #4A3939
#4A3939
oklch(36.3% 0.024 18.3)
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 #2F4243, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.019
- Onyx #343A40 ΔE 0.026
- Charcoal #264653 ΔE 0.027
- Dark Grey Blue #29465B ΔE 0.040
- Dark Blue Grey #1F3B4D ΔE 0.040
- Dark Slate Gray #2F4F4F ΔE 0.042
- Dark Teal #014D4E ΔE 0.044
- Midnight Green #073B4C ΔE 0.051
Use #2F4243 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.