#28385F
Closest named color: Prussian Blue (#1D3557). oklch(34.7% 0.072 265.9), rgb(40, 56, 95).
Aa
White text reads best on this color (11.53:1).
About this color
#28385F is a dark, moderately saturated blue. In OKLCH its lightness is 35%, its chroma 0.072 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Prussian Blue (#1D3557), ΔE 0.022 away. White text reads best on it, at 11.53:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.82:1 |
| White text | 11.53:1 |
Values
| HEX | #28385F |
| RGB | rgb(40, 56, 95) |
| HSL | hsl(223, 41%, 26%) |
| OKLCH | oklch(34.7% 0.072 265.9) |
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 #28385F | 11.53:1 | AAA | Lc -100.1 | Preferred for body text |
| Black text on #28385F | 1.82:1 | Fails | Lc 7.4 | Not readable |
| #28385F text on white | 11.53:1 | AAA | Lc 96.4 | Preferred for body text |
| #28385F text on black | 1.82:1 | 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
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EE
oklch(88.5% 0.031 267.2)
-
Step 300
300
#B0C1E4
oklch(81% 0.053 264.7)
-
Step 400
400
#87A0D7
oklch(70.8% 0.086 265.4)
-
Step 500
500
#6A87CC
oklch(63.1% 0.11 266)
-
Step 600
600
#5270B9
oklch(55.6% 0.119 265.8)
-
Step 700
700
#435D9F
oklch(49% 0.111 266.2)
-
Step 800
800
#374C81
oklch(42.6% 0.092 266.3)
-
Step 900
900 (this color)
#28385F
oklch(34.7% 0.072 265.9)
-
Step 950
950
#1C263D
oklch(27.1% 0.045 265.6)
#28385F 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) | #283C61 | 0.012 |
| Deuteranopia (no green cones) | #22375E | 0.009 |
| Tritanopia (no blue cones) | #0A4047 | 0.063 |
| Achromatopsia (no color) | #393939 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28385F
#28385F
oklch(34.7% 0.072 265.9)
- #4A3600
#4A3600
oklch(34.6% 0.071 85.5)
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 #28385F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Marine Blue #01386A ΔE 0.037
- Dark Blue Grey #1F3B4D ΔE 0.038
- Dark Grey Blue #29465B ΔE 0.047
- Midnight Green #073B4C ΔE 0.050
- Marine #042E60 ΔE 0.051
- Gunmetal #293241 ΔE 0.053
- Twilight Blue #0A437A ΔE 0.054
Use #28385F 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.