#282C59
Closest named color: Prussian Blue (#1D3557). oklch(31.5% 0.08 277), rgb(40, 44, 89).
Aa
White text reads best on this color (13.16:1).
About this color
#282C59 is a dark, moderately saturated blue. In OKLCH its lightness is 31%, its chroma 0.080 and its hue 277°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.031 away. White text reads best on it, at 13.16:1.
| Hue family | Blues |
| Lightness | dark (31%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.59:1 |
| White text | 13.16:1 |
Values
| HEX | #282C59 |
| RGB | rgb(40, 44, 89) |
| HSL | hsl(235, 38%, 25%) |
| OKLCH | oklch(31.5% 0.08 277) |
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 #282C59 | 13.16:1 | AAA | Lc -102.6 | Preferred for body text |
| Black text on #282C59 | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #282C59 text on white | 13.16:1 | AAA | Lc 99.4 | Preferred for body text |
| #282C59 text on black | 1.59:1 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E5E9FD
oklch(93.7% 0.027 276.8)
-
Step 200
200
#D0D7FC
oklch(88.6% 0.052 276.9)
-
Step 300
300
#B1BBFE
oklch(80.9% 0.095 277.5)
-
Step 400
400
#8A95FD
oklch(70.6% 0.151 277.2)
-
Step 500
500
#7077FB
oklch(63.1% 0.193 277)
-
Step 600
600
#5B5BEA
oklch(55.6% 0.21 277.1)
-
Step 700
700
#4B4ACB
oklch(49.1% 0.194 276.9)
-
Step 800
800
#3D3EA4
oklch(42.7% 0.16 276.8)
-
Step 900
900
#333682
oklch(37.6% 0.125 276.8)
-
Step 950
950 (this color)
#282C59
oklch(31.5% 0.08 277)
#282C59 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) | #18325B | 0.025 |
| Deuteranopia (no green cones) | #132E58 | 0.027 |
| Tritanopia (no blue cones) | #14363E | 0.070 |
| Achromatopsia (no color) | #303030 | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282C59
#282C59
oklch(31.5% 0.08 277)
- #3B3100
#3B3100
oklch(31.5% 0.065 96.7)
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 #282C59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.031
- Marine #042E60 ΔE 0.039
- Space Cadet #2B2D42 ΔE 0.043
- Marine Blue #01386A ΔE 0.051
- Gunmetal #293241 ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.057
- Oxford Blue #1B263B ΔE 0.061
- Midnight Green #073B4C ΔE 0.064
Use #282C59 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.