#28345A
Closest named color: Prussian Blue (#1D3557). oklch(33.4% 0.069 269.2), rgb(40, 52, 90).
Aa
White text reads best on this color (12.14:1).
About this color
#28345A is a dark, muted blue. In OKLCH its lightness is 33%, its chroma 0.069 and its hue 269°. 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 12.14:1.
| Hue family | Blues |
| Lightness | dark (33%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.72:1 |
| White text | 12.14:1 |
Values
| HEX | #28345A |
| RGB | rgb(40, 52, 90) |
| HSL | hsl(226, 38%, 25%) |
| OKLCH | oklch(33.4% 0.069 269.2) |
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 #28345A | 12.14:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #28345A | 1.72:1 | Fails | Lc 0.0 | Not readable |
| #28345A text on white | 12.14:1 | AAA | Lc 97.6 | Preferred for body text |
| #28345A text on black | 1.72:1 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E6EAF4
oklch(93.7% 0.014 268.5)
-
Step 200
200
#D1D9ED
oklch(88.5% 0.029 268.3)
-
Step 300
300
#B3C0E3
oklch(80.9% 0.052 269.2)
-
Step 400
400
#8B9FD5
oklch(70.7% 0.083 268.6)
-
Step 500
500
#6F86CA
oklch(63.1% 0.106 269)
-
Step 600
600
#586FB7
oklch(55.7% 0.115 269.1)
-
Step 700
700
#485C9D
oklch(49% 0.107 269.3)
-
Step 800
800
#3B4C7F
oklch(42.7% 0.088 268.6)
-
Step 900
900 (this color)
#28345A
oklch(33.4% 0.069 269.2)
-
Step 950
950
#1E253C
oklch(27% 0.044 270.3)
#28345A 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) | #25385C | 0.012 |
| Deuteranopia (no green cones) | #1F3459 | 0.012 |
| Tritanopia (no blue cones) | #113C42 | 0.062 |
| Achromatopsia (no color) | #363636 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28345A
#28345A
oklch(33.4% 0.069 269.2)
- #443400
#443400
oklch(33.3% 0.068 89.7)
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 #28345A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.016
- Dark Blue Grey #1F3B4D ΔE 0.038
- Marine Blue #01386A ΔE 0.041
- Space Cadet #2B2D42 ΔE 0.044
- Gunmetal #293241 ΔE 0.044
- Marine #042E60 ΔE 0.045
- Midnight Green #073B4C ΔE 0.048
- Dark Grey Blue #29465B ΔE 0.058
Use #28345A 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.