#2F4748
Closest named color: Charcoal (#264653). oklch(37.9% 0.03 199.3), rgb(47, 71, 72).
Aa
White text reads best on this color (9.92:1).
About this color
#2F4748 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.030. 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 9.92:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Charcoal (#264653) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #2F4748 |
| RGB | rgb(47, 71, 72) |
| HSL | hsl(182, 21%, 23%) |
| OKLCH | oklch(37.9% 0.03 199.3) |
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 #2F4748 | 9.92:1 | AAA | Lc -97.1 | Preferred for body text |
| Black text on #2F4748 | 2.11:1 | Fails | Lc 10.9 | Not readable |
| #2F4748 text on white | 9.92:1 | AAA | Lc 93.0 | Preferred for body text |
| #2F4748 text on black | 2.11:1 | Fails | Lc -9.5 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEB
oklch(93.6% 0.006 197)
-
Step 200
200
#D0DCDC
oklch(88.5% 0.013 196.9)
-
Step 300
300
#B1C5C6
oklch(80.9% 0.022 200.4)
-
Step 400
400
#87A8A9
oklch(70.7% 0.036 198.7)
-
Step 500
500
#699294
oklch(63.1% 0.045 199.9)
-
Step 600
600
#507C7E
oklch(55.5% 0.049 199.5)
-
Step 700
700
#40696B
oklch(49.1% 0.046 199.7)
-
Step 800
800
#355657
oklch(42.8% 0.039 198.3)
-
Step 900
900 (this color)
#2F4748
oklch(37.9% 0.03 199.3)
-
Step 950
950
#1C292A
oklch(26.9% 0.018 202.1)
#2F4748 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) | #444548 | 0.031 |
| Deuteranopia (no green cones) | #3F4148 | 0.029 |
| Tritanopia (no blue cones) | #264947 | 0.012 |
| Achromatopsia (no color) | #434343 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2F4748
#2F4748
oklch(37.9% 0.03 199.3)
- #513C3C
#513C3C
oklch(37.9% 0.03 18.6)
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 #2F4748, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal #264653 ΔE 0.022
- Charcoal Grey #3C4142 ΔE 0.024
- Dark Slate Gray #2F4F4F ΔE 0.026
- Dark Grey Blue #29465B ΔE 0.035
- Dark Teal #014D4E ΔE 0.035
- Onyx #343A40 ΔE 0.041
- Dark Blue Green #005249 ΔE 0.045
- Dark Blue Grey #1F3B4D ΔE 0.050
Use #2F4748 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.