#28385E
Closest named color: Prussian Blue (#1D3557). oklch(34.7% 0.07 265.6), rgb(40, 56, 94).
Aa
White text reads best on this color (11.55:1).
About this color
#28385E is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.070 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.021 away. White text reads best on it, at 11.55:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.81:1 |
| White text | 11.55:1 |
Values
| HEX | #28385E |
| RGB | rgb(40, 56, 94) |
| HSL | hsl(222, 40%, 26%) |
| OKLCH | oklch(34.7% 0.07 265.6) |
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 #28385E | 11.55:1 | AAA | Lc -100.2 | Preferred for body text |
| Black text on #28385E | 1.81:1 | Fails | Lc 7.4 | Not readable |
| #28385E text on white | 11.55:1 | AAA | Lc 96.5 | Preferred for body text |
| #28385E text on black | 1.81:1 | 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
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B0C1E3
oklch(80.9% 0.052 264.2)
-
Step 400
400
#88A0D6
oklch(70.8% 0.084 265.8)
-
Step 500
500
#6A87CB
oklch(63% 0.108 265.8)
-
Step 600
600
#5270B8
oklch(55.6% 0.118 265.7)
-
Step 700
700
#435E9E
oklch(49.2% 0.108 265.4)
-
Step 800
800
#374D80
oklch(42.8% 0.089 265.2)
-
Step 900
900 (this color)
#28385E
oklch(34.7% 0.07 265.6)
-
Step 950
950
#1C263C
oklch(27.1% 0.044 265)
#28385E 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) | #293C60 | 0.013 |
| Deuteranopia (no green cones) | #22375D | 0.009 |
| Tritanopia (no blue cones) | #0C4046 | 0.063 |
| Achromatopsia (no color) | #393939 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28385E
#28385E
oklch(34.7% 0.07 265.6)
- #4A3601
#4A3601
oklch(34.6% 0.07 85.2)
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 #28385E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.021
- Dark Blue Grey #1F3B4D ΔE 0.036
- Marine Blue #01386A ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.047
- Midnight Green #073B4C ΔE 0.048
- Gunmetal #293241 ΔE 0.051
- Marine #042E60 ΔE 0.051
- Charcoal #264653 ΔE 0.054
Use #28385E 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.