#283161
Closest named color: Prussian Blue (#1D3557). oklch(33.2% 0.085 273), rgb(40, 49, 97).
Aa
White text reads best on this color (12.33:1).
About this color
#283161 is a dark, moderately saturated blue. In OKLCH its lightness is 33%, its chroma 0.085 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.027 away. White text reads best on it, at 12.33:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.70:1 |
| White text | 12.33:1 |
Values
| HEX | #283161 |
| RGB | rgb(40, 49, 97) |
| HSL | hsl(231, 42%, 27%) |
| OKLCH | oklch(33.2% 0.085 273) |
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 #283161 | 12.33:1 | AAA | Lc -101.4 | Preferred for body text |
| Black text on #283161 | 1.70:1 | Fails | Lc 0.0 | Not readable |
| #283161 text on white | 12.33:1 | AAA | Lc 97.9 | Preferred for body text |
| #283161 text on black | 1.70:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F1
oklch(88.5% 0.035 273.2)
-
Step 300
300
#B3BFEB
oklch(81% 0.064 273)
-
Step 400
400
#8B9CE0
oklch(70.6% 0.102 272.8)
-
Step 500
500
#7082D8
oklch(63.1% 0.131 273.2)
-
Step 600
600
#596AC5
oklch(55.6% 0.142 273)
-
Step 700
700
#4958AA
oklch(49.1% 0.131 272.9)
-
Step 800
800
#3C488A
oklch(42.6% 0.11 273.1)
-
Step 900
900 (this color)
#283161
oklch(33.2% 0.085 273)
-
Step 950
950
#1E2441
oklch(27% 0.055 273.4)
#283161 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) | #1B3763 | 0.022 |
| Deuteranopia (no green cones) | #143260 | 0.024 |
| Tritanopia (no blue cones) | #0A3C44 | 0.076 |
| Achromatopsia (no color) | #353535 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283161
#283161
oklch(33.2% 0.085 273)
- #423400
#423400
oklch(33.1% 0.068 92.2)
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 #283161, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.027
- Marine Blue #01386A ΔE 0.038
- Marine #042E60 ΔE 0.039
- Dark Blue Grey #1F3B4D ΔE 0.054
- Space Cadet #2B2D42 ΔE 0.055
- Gunmetal #293241 ΔE 0.059
- Midnight Green #073B4C ΔE 0.062
- Twilight Blue #0A437A ΔE 0.064
Use #283161 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.