#28303E
Closest named color: Gunmetal (#293241). oklch(30.8% 0.028 261.5), rgb(40, 48, 62).
Aa
White text reads best on this color (13.26:1).
About this color
#28303E is a dark close to neutral grey. In OKLCH its lightness is 31%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.008 away. White text reads best on it, at 13.26:1.
| Hue family | Neutrals |
| Lightness | dark (31%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.58:1 |
| White text | 13.26:1 |
Values
| HEX | #28303E |
| RGB | rgb(40, 48, 62) |
| HSL | hsl(218, 22%, 20%) |
| OKLCH | oklch(30.8% 0.028 261.5) |
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 #28303E | 13.26:1 | AAA | Lc -102.8 | Preferred for body text |
| Black text on #28303E | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #28303E text on white | 13.26:1 | AAA | Lc 99.6 | Preferred for body text |
| #28303E text on black | 1.58:1 | 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
#E6EAF0
oklch(93.6% 0.009 258.3)
-
Step 200
200
#D2D9E6
oklch(88.4% 0.019 263)
-
Step 300
300
#B5C1D6
oklch(80.8% 0.032 261.7)
-
Step 400
400
#8FA1C2
oklch(70.6% 0.053 262.5)
-
Step 500
500
#738AB3
oklch(63.1% 0.068 261.8)
-
Step 600
600
#5B749E
oklch(55.6% 0.072 260.5)
-
Step 700
700
#4B6187
oklch(49.1% 0.067 261)
-
Step 800
800
#3E4F6E
oklch(42.7% 0.056 262.1)
-
Step 900
900
#354259
oklch(37.8% 0.043 261.6)
-
Step 950
950 (this color)
#28303E
oklch(30.8% 0.028 261.5)
#28303E 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) | #2B313F | 0.006 |
| Deuteranopia (no green cones) | #292F3E | 0.004 |
| Tritanopia (no blue cones) | #223335 | 0.024 |
| Achromatopsia (no color) | #303030 | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28303E
#28303E
oklch(30.8% 0.028 261.5)
- #372E20
#372E20
oklch(30.7% 0.027 78.5)
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 #28303E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.008
- Space Cadet #2B2D42 ΔE 0.015
- Dark Blue Grey #1F3B4D ΔE 0.039
- Onyx #343A40 ΔE 0.040
- Oxford Blue #1B263B ΔE 0.041
- Prussian Blue #1D3557 ΔE 0.045
- Midnight Green #073B4C ΔE 0.045
- Jet #212529 ΔE 0.049
Use #28303E 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.