#2B313B
Closest named color: Gunmetal (#293241). oklch(31.2% 0.02 260.6), rgb(43, 49, 59).
Aa
White text reads best on this color (13.08:1).
About this color
#2B313B is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.011 away. White text reads best on it, at 13.08:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.60:1 |
| White text | 13.08:1 |
Values
| HEX | #2B313B |
| RGB | rgb(43, 49, 59) |
| HSL | hsl(218, 16%, 20%) |
| OKLCH | oklch(31.2% 0.02 260.6) |
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 #2B313B | 13.08:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #2B313B | 1.60:1 | Fails | Lc 0.0 | Not readable |
| #2B313B text on white | 13.08:1 | AAA | Lc 99.4 | Preferred for body text |
| #2B313B text on black | 1.60:1 | 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
#E7EAEE
oklch(93.6% 0.006 255.5)
-
Step 200
200
#D4D9E2
oklch(88.4% 0.013 262.4)
-
Step 300
300
#B8C1D0
oklch(80.9% 0.023 260.7)
-
Step 400
400
#93A1B9
oklch(70.6% 0.039 261.3)
-
Step 500
500
#798AA7
oklch(63% 0.048 261.1)
-
Step 600
600
#627492
oklch(55.6% 0.052 260.5)
-
Step 700
700
#51617D
oklch(49% 0.049 261.5)
-
Step 800
800
#424F65
oklch(42.5% 0.04 260.8)
-
Step 900
900
#384253
oklch(37.7% 0.032 261)
-
Step 950
950 (this color)
#2B313B
oklch(31.2% 0.02 260.6)
#2B313B 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) | #2E313B | 0.005 |
| Deuteranopia (no green cones) | #2C303B | 0.004 |
| Tritanopia (no blue cones) | #273334 | 0.018 |
| Achromatopsia (no color) | #313131 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B313B
#2B313B
oklch(31.2% 0.02 260.6)
- #363025
#363025
oklch(31.2% 0.021 82.6)
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 #2B313B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.011
- Space Cadet #2B2D42 ΔE 0.021
- Onyx #343A40 ΔE 0.034
- Dark Blue Grey #1F3B4D ΔE 0.040
- Midnight Green #073B4C ΔE 0.047
- Oxford Blue #1B263B ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.051
- Jet #212529 ΔE 0.051
Use #2B313B 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.