#285299
Closest named color: Dusk Blue (#26538D). oklch(44.8% 0.125 260.2), rgb(40, 82, 153).
Aa
White text reads best on this color (7.61:1).
About this color
#285299 is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.125 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.021 away. White text reads best on it, at 7.61:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.75:1 |
| White text | 7.61:1 |
Values
| HEX | #285299 |
| RGB | rgb(40, 82, 153) |
| HSL | hsl(218, 59%, 38%) |
| OKLCH | oklch(44.8% 0.125 260.2) |
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 #285299 | 7.61:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #285299 | 2.75:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #285299 text on white | 7.61:1 | AAA | Lc 86.1 | Fine for body text |
| #285299 text on black | 2.75:1 | Fails | Lc -15.9 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E2EAF8
oklch(93.5% 0.021 261.8)
-
Step 200
200
#CADAF5
oklch(88.5% 0.041 260.9)
-
Step 300
300
#A5C2F1
oklch(80.9% 0.074 260)
-
Step 400
400
#75A1E9
oklch(70.7% 0.117 259.9)
-
Step 500
500
#5187E3
oklch(63% 0.151 260.4)
-
Step 600
600
#356FD1
oklch(55.6% 0.163 260.2)
-
Step 700
700
#285CB5
oklch(49% 0.152 260.4)
-
Step 800
800 (this color)
#285299
oklch(44.8% 0.125 260.2)
-
Step 900
900
#214075
oklch(37.7% 0.098 260.4)
-
Step 950
950
#142644
oklch(27% 0.061 260.1)
#285299 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) | #2E599C | 0.022 |
| Deuteranopia (no green cones) | #164F98 | 0.017 |
| Tritanopia (no blue cones) | #00636E | 0.099 |
| Achromatopsia (no color) | #545454 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #285299
#285299
oklch(44.8% 0.125 260.2)
- #6F4E00
#6F4E00
oklch(44.8% 0.093 80.5)
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 #285299, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.021
- Cobalt #1E488F ΔE 0.034
- Denim Blue #3B5B92 ΔE 0.038
- Light Navy #155084 ΔE 0.039
- Light Navy Blue #2E5A88 ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.046
- Twilight #4E518B ΔE 0.050
- Blueberry #464196 ΔE 0.053
Use #285299 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.