#23303D
Closest named color: Gunmetal (#293241). oklch(30.3% 0.029 248.8), rgb(35, 48, 61).
Aa
White text reads best on this color (13.44:1).
About this color
#23303D is a dark close to neutral grey. In OKLCH its lightness is 30%, its chroma 0.029. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.014 away. White text reads best on it, at 13.44:1.
| Hue family | Neutrals |
| Lightness | dark (30%) |
| Chroma | close to neutral grey (0.029) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.56:1 |
| White text | 13.44:1 |
Values
| HEX | #23303D |
| RGB | rgb(35, 48, 61) |
| HSL | hsl(210, 27%, 19%) |
| OKLCH | oklch(30.3% 0.029 248.8) |
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 #23303D | 13.44:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #23303D | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #23303D text on white | 13.44:1 | AAA | Lc 99.9 | Preferred for body text |
| #23303D text on black | 1.56:1 | 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
#E5EBF0
oklch(93.7% 0.009 242.8)
-
Step 200
200
#D0DBE6
oklch(88.6% 0.019 248)
-
Step 300
300
#B0C3D7
oklch(80.9% 0.035 249.6)
-
Step 400
400
#86A4C2
oklch(70.7% 0.055 248.6)
-
Step 500
500
#678DB3
oklch(63% 0.072 249)
-
Step 600
600
#4E779F
oklch(55.6% 0.078 248.8)
-
Step 700
700
#3F6488
oklch(49.1% 0.072 248.8)
-
Step 800
800
#34526E
oklch(42.8% 0.059 247.7)
-
Step 900
900
#2E4459
oklch(37.8% 0.046 248)
-
Step 950
950 (this color)
#23303D
oklch(30.3% 0.029 248.8)
#23303D 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) | #2B303E | 0.013 |
| Deuteranopia (no green cones) | #282E3D | 0.010 |
| Tritanopia (no blue cones) | #1A3334 | 0.026 |
| Achromatopsia (no color) | #2F2F2F | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #23303D
#23303D
oklch(30.3% 0.029 248.8)
- #392C1E
#392C1E
oklch(30.4% 0.03 68.4)
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 #23303D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.014
- Space Cadet #2B2D42 ΔE 0.020
- Oxford Blue #1B263B ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.040
- Midnight Green #073B4C ΔE 0.042
- Onyx #343A40 ΔE 0.045
- Dark #1B2431 ΔE 0.046
- Jet #212529 ΔE 0.046
Use #23303D 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.