#2B333F
Closest named color: Gunmetal (#293241). oklch(31.9% 0.024 258.4), rgb(43, 51, 63).
Aa
White text reads best on this color (12.74:1).
About this color
#2B333F is a dark close to neutral grey. In OKLCH its lightness is 32%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.007 away. White text reads best on it, at 12.74:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.64:1 |
| White text | 12.74:1 |
Values
| HEX | #2B333F |
| RGB | rgb(43, 51, 63) |
| HSL | hsl(216, 19%, 21%) |
| OKLCH | oklch(31.9% 0.024 258.4) |
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 #2B333F | 12.74:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #2B333F | 1.64:1 | Fails | Lc 0.0 | Not readable |
| #2B333F text on white | 12.74:1 | AAA | Lc 98.8 | Preferred for body text |
| #2B333F text on black | 1.64:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E6EAEF
oklch(93.5% 0.008 253.9)
-
Step 200
200
#D3DAE4
oklch(88.6% 0.016 257.2)
-
Step 300
300
#B6C2D4
oklch(81% 0.029 258.4)
-
Step 400
400
#8FA2BE
oklch(70.7% 0.046 258)
-
Step 500
500
#748BAD
oklch(63.1% 0.058 258)
-
Step 600
600
#5C7499
oklch(55.5% 0.065 258.9)
-
Step 700
700
#4C6282
oklch(49.2% 0.058 257.7)
-
Step 800
800
#3E506A
oklch(42.7% 0.049 257.5)
-
Step 900
900
#354256
oklch(37.6% 0.038 258.9)
-
Step 950
950 (this color)
#2B333F
oklch(31.9% 0.024 258.4)
#2B333F 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) | #2F3440 | 0.008 |
| Deuteranopia (no green cones) | #2D323F | 0.004 |
| Tritanopia (no blue cones) | #253637 | 0.022 |
| Achromatopsia (no color) | #323232 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B333F
#2B333F
oklch(31.9% 0.024 258.4)
- #393125
#393125
oklch(31.8% 0.023 77.8)
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 #2B333F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.007
- Space Cadet #2B2D42 ΔE 0.022
- Onyx #343A40 ΔE 0.029
- Dark Blue Grey #1F3B4D ΔE 0.032
- Midnight Green #073B4C ΔE 0.042
- Prussian Blue #1D3557 ΔE 0.045
- Oxford Blue #1B263B ΔE 0.053
- Charcoal Grey #3C4142 ΔE 0.056
Use #2B333F 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.