#23313B
Closest named color: Gunmetal (#293241). oklch(30.5% 0.026 239.8), rgb(35, 49, 59).
Aa
White text reads best on this color (13.34:1).
About this color
#23313B is a dark close to neutral grey. In OKLCH its lightness is 30%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.015 away. White text reads best on it, at 13.34:1.
| Hue family | Neutrals |
| Lightness | dark (30%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.57:1 |
| White text | 13.34:1 |
Values
| HEX | #23313B |
| RGB | rgb(35, 49, 59) |
| HSL | hsl(205, 26%, 18%) |
| OKLCH | oklch(30.5% 0.026 239.8) |
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 #23313B | 13.34:1 | AAA | Lc -102.9 | Preferred for body text |
| Black text on #23313B | 1.57:1 | Fails | Lc 0.0 | Not readable |
| #23313B text on white | 13.34:1 | AAA | Lc 99.7 | Preferred for body text |
| #23313B text on black | 1.57:1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#CFDBE3
oklch(88.5% 0.017 236.7)
-
Step 300
300
#AFC4D3
oklch(80.9% 0.031 238.9)
-
Step 400
400
#85A5BD
oklch(70.6% 0.05 240.8)
-
Step 500
500
#668FAC
oklch(63.1% 0.063 239.8)
-
Step 600
600
#4C7998
oklch(55.6% 0.069 239.8)
-
Step 700
700
#3D6681
oklch(49.2% 0.063 238.7)
-
Step 800
800
#335369
oklch(42.7% 0.053 239.7)
-
Step 900
900
#2D4555
oklch(37.8% 0.04 238.4)
-
Step 950
950 (this color)
#23313B
oklch(30.5% 0.026 239.8)
#23313B 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) | #2D313C | 0.016 |
| Deuteranopia (no green cones) | #292E3B | 0.013 |
| Tritanopia (no blue cones) | #1B3434 | 0.022 |
| Achromatopsia (no color) | #2F2F2F | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23313B
#23313B
oklch(30.5% 0.026 239.8)
- #392C22
#392C22
oklch(30.5% 0.026 59.2)
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 #23313B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.015
- Space Cadet #2B2D42 ΔE 0.025
- Dark Blue Grey #1F3B4D ΔE 0.039
- Oxford Blue #1B263B ΔE 0.042
- Midnight Green #073B4C ΔE 0.042
- Onyx #343A40 ΔE 0.042
- Jet #212529 ΔE 0.046
- Dark #1B2431 ΔE 0.048
Use #23313B 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.