#285484
Closest named color: Dusk Blue (#26538D). oklch(43.9% 0.093 252.5), rgb(40, 84, 132).
Aa
White text reads best on this color (7.80:1).
About this color
#285484 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.093 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.016 away. White text reads best on it, at 7.80:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.69:1 |
| White text | 7.80:1 |
Values
| HEX | #285484 |
| RGB | rgb(40, 84, 132) |
| HSL | hsl(211, 53%, 34%) |
| OKLCH | oklch(43.9% 0.093 252.5) |
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 #285484 | 7.80:1 | AAA | Lc -91.6 | Preferred for body text |
| Black text on #285484 | 2.69:1 | Fails | Lc 17.2 | Dividers and decoration only |
| #285484 text on white | 7.80:1 | AAA | Lc 86.9 | Fine for body text |
| #285484 text on black | 2.69:1 | Fails | Lc -15.2 | Dividers and decoration only |
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
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A8C3E4
oklch(80.8% 0.055 253.6)
-
Step 400
400
#79A4D6
oklch(70.7% 0.087 252.7)
-
Step 500
500
#558DCB
oklch(63.2% 0.111 252.2)
-
Step 600
600
#3976B8
oklch(55.7% 0.121 252.4)
-
Step 700
700
#2B639E
oklch(49.2% 0.112 252.1)
-
Step 800
800 (this color)
#285484
oklch(43.9% 0.093 252.5)
-
Step 900
900
#234367
oklch(37.7% 0.073 252.7)
-
Step 950
950
#15283C
oklch(27.1% 0.045 250.9)
#285484 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) | #3F5786 | 0.028 |
| Deuteranopia (no green cones) | #324E83 | 0.019 |
| Tritanopia (no blue cones) | #005F66 | 0.072 |
| Achromatopsia (no color) | #525252 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285484
#285484
oklch(43.9% 0.093 252.5)
- #714801
#714801
oklch(43.8% 0.093 72.1)
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 #285484, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.016
- Light Navy Blue #2E5A88 ΔE 0.020
- Light Navy #155084 ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.022
- Denim Blue #3B5B92 ΔE 0.037
- YInMn Blue #415A77 ΔE 0.043
- Cobalt #1E488F ΔE 0.044
- Dusk #4E5481 ΔE 0.046
Use #285484 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.