#28395C
Closest named color: Prussian Blue (#1D3557). oklch(34.8% 0.065 263.7), rgb(40, 57, 92).
Aa
White text reads best on this color (11.47:1).
About this color
#28395C is a dark, muted blue. In OKLCH its lightness is 35%, its chroma 0.065 and its hue 264°. 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 11.47:1.
| Hue family | Blues |
| Lightness | dark (35%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Prussian Blue (#1D3557) |
| Black text | 1.83:1 |
| White text | 11.47:1 |
Values
| HEX | #28395C |
| RGB | rgb(40, 57, 92) |
| HSL | hsl(220, 39%, 26%) |
| OKLCH | oklch(34.8% 0.065 263.7) |
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 #28395C | 11.47:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #28395C | 1.83:1 | Fails | Lc 7.5 | Not readable |
| #28395C text on white | 11.47:1 | AAA | Lc 96.3 | Preferred for body text |
| #28395C text on black | 1.83:1 | 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
#D0D9EC
oklch(88.4% 0.028 265.4)
-
Step 300
300
#B0C1E1
oklch(80.9% 0.049 263.1)
-
Step 400
400
#87A1D2
oklch(70.7% 0.078 262.8)
-
Step 500
500
#6A88C7
oklch(63% 0.102 264.2)
-
Step 600
600
#5271B3
oklch(55.5% 0.109 264.1)
-
Step 700
700
#425F9A
oklch(49.1% 0.101 263.3)
-
Step 800
800
#374E7D
oklch(42.8% 0.083 263.5)
-
Step 900
900 (this color)
#28395C
oklch(34.8% 0.065 263.7)
-
Step 950
950
#1C263B
oklch(27% 0.042 264.3)
#28395C 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) | #2B3C5D | 0.011 |
| Deuteranopia (no green cones) | #25375B | 0.008 |
| Tritanopia (no blue cones) | #0E4146 | 0.059 |
| Achromatopsia (no color) | #393939 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28395C
#28395C
oklch(34.8% 0.065 263.7)
- #4A3608
#4A3608
oklch(34.7% 0.066 83.2)
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 #28395C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Prussian Blue #1D3557 ΔE 0.022
- Dark Blue Grey #1F3B4D ΔE 0.032
- Marine Blue #01386A ΔE 0.040
- Dark Grey Blue #29465B ΔE 0.043
- Midnight Green #073B4C ΔE 0.045
- Gunmetal #293241 ΔE 0.048
- Charcoal #264653 ΔE 0.049
- Space Cadet #2B2D42 ΔE 0.053
Use #28395C 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.