#282F3F
Closest named color: Gunmetal (#293241). oklch(30.6% 0.031 266.2), rgb(40, 47, 63).
Aa
White text reads best on this color (13.38:1).
About this color
#282F3F is a dark, muted blue. In OKLCH its lightness is 31%, its chroma 0.031 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Gunmetal (#293241), ΔE 0.010 away. White text reads best on it, at 13.38:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | muted (0.031) |
| Temperature | cool |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.56:1 |
| White text | 13.38:1 |
Values
| HEX | #282F3F |
| RGB | rgb(40, 47, 63) |
| HSL | hsl(222, 22%, 20%) |
| OKLCH | oklch(30.6% 0.031 266.2) |
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 #282F3F | 13.38:1 | AAA | Lc -103.0 | Preferred for body text |
| Black text on #282F3F | 1.56:1 | Fails | Lc 0.0 | Not readable |
| #282F3F text on white | 13.38:1 | AAA | Lc 99.8 | Preferred for body text |
| #282F3F 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
#F4F5F9
oklch(97.1% 0.005 275)
-
Step 100
100
#E6EAF1
oklch(93.6% 0.01 261.8)
-
Step 200
200
#D3D9E7
oklch(88.5% 0.02 267.3)
-
Step 300
300
#B6C1D9
oklch(81% 0.036 265.9)
-
Step 400
400
#90A0C6
oklch(70.7% 0.059 267)
-
Step 500
500
#7589B7
oklch(63.2% 0.073 266.2)
-
Step 600
600
#5D72A3
oklch(55.6% 0.081 266.1)
-
Step 700
700
#4D5F8C
oklch(49% 0.076 267)
-
Step 800
800
#3F4E71
oklch(42.7% 0.062 266.1)
-
Step 900
900
#36415C
oklch(37.8% 0.049 267)
-
Step 950
950 (this color)
#282F3F
oklch(30.6% 0.031 266.2)
#282F3F 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) | #2A3040 | 0.005 |
| Deuteranopia (no green cones) | #282E3F | 0.003 |
| Tritanopia (no blue cones) | #213234 | 0.028 |
| Achromatopsia (no color) | #2F2F2F | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282F3F
#282F3F
oklch(30.6% 0.031 266.2)
- #362E1D
#362E1D
oklch(30.5% 0.031 85.5)
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 #282F3F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.010
- Space Cadet #2B2D42 ΔE 0.011
- Oxford Blue #1B263B ΔE 0.038
- Dark Blue Grey #1F3B4D ΔE 0.041
- Onyx #343A40 ΔE 0.044
- Prussian Blue #1D3557 ΔE 0.044
- Midnight Green #073B4C ΔE 0.047
- Dark #1B2431 ΔE 0.048
Use #282F3F 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.