#2F4049
Closest named color: Onyx (#343A40). oklch(36.1% 0.027 231.5), rgb(47, 64, 73).
Aa
White text reads best on this color (10.76:1).
About this color
#2F4049 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.021 away. White text reads best on it, at 10.76:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.95:1 |
| White text | 10.76:1 |
Values
| HEX | #2F4049 |
| RGB | rgb(47, 64, 73) |
| HSL | hsl(201, 22%, 24%) |
| OKLCH | oklch(36.1% 0.027 231.5) |
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 #2F4049 | 10.76:1 | AAA | Lc -98.8 | Preferred for body text |
| Black text on #2F4049 | 1.95:1 | Fails | Lc 9.0 | Not readable |
| #2F4049 text on white | 10.76:1 | AAA | Lc 94.9 | Preferred for body text |
| #2F4049 text on black | 1.95:1 | Fails | Lc -7.7 | 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
#8DA5B1
oklch(70.7% 0.032 229.4)
-
Step 500
500
#718E9E
oklch(63% 0.041 232.4)
-
Step 600
600
#597889
oklch(55.5% 0.044 232.6)
-
Step 700
700
#486574
oklch(49% 0.042 231.2)
-
Step 800
800
#3C535F
oklch(42.8% 0.034 231.3)
-
Step 900
900 (this color)
#2F4049
oklch(36.1% 0.027 231.5)
-
Step 950
950
#1E282D
oklch(27% 0.017 229.8)
#2F4049 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) | #3C3F49 | 0.020 |
| Deuteranopia (no green cones) | #383C49 | 0.018 |
| Tritanopia (no blue cones) | #274343 | 0.020 |
| Achromatopsia (no color) | #3E3E3E | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4049
#2F4049
oklch(36.1% 0.027 231.5)
- #493930
#493930
oklch(35.9% 0.027 50.9)
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 #2F4049, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.021
- Charcoal #264653 ΔE 0.023
- Charcoal Grey #3C4142 ΔE 0.023
- Dark Blue Grey #1F3B4D ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.032
- Midnight Green #073B4C ΔE 0.045
- Gunmetal #293241 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.048
Use #2F4049 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.