#28517E
Closest named color: Light Navy (#155084). oklch(42.8% 0.088 252.5), rgb(40, 81, 126).
Aa
White text reads best on this color (8.17:1).
About this color
#28517E is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.088 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.018 away. White text reads best on it, at 8.17:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.088) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.56:1 |
| White text | 8.17:1 |
Values
| HEX | #28517E |
| RGB | rgb(40, 81, 126) |
| HSL | hsl(211, 52%, 33%) |
| OKLCH | oklch(42.8% 0.088 252.5) |
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 #28517E | 8.17:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #28517E | 2.56:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #28517E text on white | 8.17:1 | AAA | Lc 88.1 | Fine for body text |
| #28517E text on black | 2.56:1 | Fails | Lc -14.1 | 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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CCDBEC
oklch(88.5% 0.029 251.5)
-
Step 300
300
#A9C3E2
oklch(80.8% 0.052 253)
-
Step 400
400
#7BA4D3
oklch(70.7% 0.082 252.3)
-
Step 500
500
#598DC8
oklch(63.2% 0.106 252.6)
-
Step 600
600
#3D76B4
oklch(55.6% 0.114 252.3)
-
Step 700
700
#2F639B
oklch(49.2% 0.106 252.3)
-
Step 800
800 (this color)
#28517E
oklch(42.8% 0.088 252.5)
-
Step 900
900
#254365
oklch(37.6% 0.069 252.8)
-
Step 950
950
#16283B
oklch(27.1% 0.043 250.9)
#28517E 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) | #3D5480 | 0.027 |
| Deuteranopia (no green cones) | #314B7D | 0.019 |
| Tritanopia (no blue cones) | #005B61 | 0.069 |
| Achromatopsia (no color) | #4F4F4F | 0.088 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28517E
#28517E
oklch(42.8% 0.088 252.5)
- #6C4606
#6C4606
oklch(42.7% 0.088 72.7)
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 #28517E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.018
- Deep Sea Blue #015482 ΔE 0.021
- Dusk Blue #26538D ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.031
- Cobalt #1E488F ΔE 0.043
- YInMn Blue #415A77 ΔE 0.045
- Denim Blue #3B5B92 ΔE 0.048
- Dusk #4E5481 ΔE 0.050
Use #28517E 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.