#283258
Closest named color: Prussian Blue (#1D3557). oklch(32.8% 0.069 271.1), rgb(40, 50, 88).
Aa
White text reads best on this color (12.44:1).
About this color
#283258 is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.069 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.016 away. White text reads best on it, at 12.44:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.68:1 |
| White text | 12.44:1 |
Values
| HEX | #283258 |
| RGB | rgb(40, 50, 88) |
| HSL | hsl(228, 38%, 25%) |
| OKLCH | oklch(32.8% 0.069 271.1) |
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 #283258 | 12.44:1 | AAA | Lc -101.6 | Preferred for body text |
| Black text on #283258 | 1.68:1 | Fails | Lc 0.0 | Not readable |
| #283258 text on white | 12.44:1 | AAA | Lc 98.2 | Preferred for body text |
| #283258 text on black | 1.68:1 | 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 900.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D2D9ED
oklch(88.6% 0.029 270.4)
-
Step 300
300
#B4BFE3
oklch(80.8% 0.052 271.8)
-
Step 400
400
#8D9ED5
oklch(70.7% 0.083 270.9)
-
Step 500
500
#7285C9
oklch(63% 0.105 271.2)
-
Step 600
600
#5B6EB6
oklch(55.6% 0.114 271.1)
-
Step 700
700
#4B5C9D
oklch(49.2% 0.106 271)
-
Step 800
800
#3D4B7F
oklch(42.6% 0.088 270.9)
-
Step 900
900 (this color)
#283258
oklch(32.8% 0.069 271.1)
-
Step 950
950
#1F253C
oklch(27% 0.044 272.1)
#283258 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) | #233659 | 0.013 |
| Deuteranopia (no green cones) | #1E3257 | 0.014 |
| Tritanopia (no blue cones) | #133A40 | 0.062 |
| Achromatopsia (no color) | #343434 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283258
#283258
oklch(32.8% 0.069 271.1)
- #423300
#423300
oklch(32.8% 0.067 90.6)
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 #283258, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.016
- Space Cadet #2B2D42 ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.040
- Gunmetal #293241 ΔE 0.042
- Marine #042E60 ΔE 0.043
- Marine Blue #01386A ΔE 0.044
- Midnight Green #073B4C ΔE 0.050
- Onyx #343A40 ΔE 0.059
Use #283258 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.