#285585
Closest named color: Dusk Blue (#26538D). oklch(44.2% 0.094 252), rgb(40, 85, 133).
Aa
White text reads best on this color (7.69:1).
About this color
#285585 is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.094 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 7.69:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.72:1 |
| White text | 7.69:1 |
Values
| HEX | #285585 |
| RGB | rgb(40, 85, 133) |
| HSL | hsl(211, 54%, 34%) |
| OKLCH | oklch(44.2% 0.094 252) |
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 #285585 | 7.69:1 | AAA | Lc -91.3 | Preferred for body text |
| Black text on #285585 | 2.72:1 | Fails | Lc 17.5 | Dividers and decoration only |
| #285585 text on white | 7.69:1 | AAA | Lc 86.5 | Fine for body text |
| #285585 text on black | 2.72:1 | Fails | Lc -15.6 | 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
#E2EBF4
oklch(93.6% 0.016 248)
-
Step 200
200
#CBDBED
oklch(88.5% 0.03 251.3)
-
Step 300
300
#A8C4E4
oklch(81% 0.055 251.9)
-
Step 400
400
#78A4D6
oklch(70.6% 0.088 252.2)
-
Step 500
500
#548DCB
oklch(63.1% 0.112 251.8)
-
Step 600
600
#3776B8
oklch(55.6% 0.122 251.8)
-
Step 700
700
#29639E
oklch(49.1% 0.112 251.5)
-
Step 800
800 (this color)
#285585
oklch(44.2% 0.094 252)
-
Step 900
900
#224367
oklch(37.6% 0.073 252.1)
-
Step 950
950
#15283C
oklch(27.1% 0.045 250.9)
#285585 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) | #405887 | 0.029 |
| Deuteranopia (no green cones) | #334F84 | 0.019 |
| Tritanopia (no blue cones) | #006066 | 0.073 |
| Achromatopsia (no color) | #535353 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285585
#285585
oklch(44.2% 0.094 252)
- #724902
#724902
oklch(44.1% 0.093 72.3)
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 #285585, 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 0.017
- Light Navy #155084 ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.023
- Denim Blue #3B5B92 ΔE 0.035
- YInMn Blue #415A77 ΔE 0.041
- Dusk #4E5481 ΔE 0.046
- Cobalt #1E488F ΔE 0.046
Use #285585 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.