#283285
Closest named color: Twilight Blue (#0A437A). oklch(36.4% 0.138 272.3), rgb(40, 50, 133).
Aa
White text reads best on this color (11.13:1).
About this color
#283285 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.138 and its hue 272°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.054 away. White text reads best on it, at 11.13:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 1.88:1 |
| White text | 11.13:1 |
Values
| HEX | #283285 |
| RGB | rgb(40, 50, 133) |
| HSL | hsl(234, 54%, 34%) |
| OKLCH | oklch(36.4% 0.138 272.3) |
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 #283285 | 11.13:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #283285 | 1.88:1 | Fails | Lc 8.6 | Not readable |
| #283285 text on white | 11.13:1 | AAA | Lc 95.3 | Preferred for body text |
| #283285 text on black | 1.88:1 | Fails | Lc -7.4 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CCD8FF
oklch(88.6% 0.055 271.8)
-
Step 300
300
#ABBDFF
oklch(80.9% 0.096 272.3)
-
Step 400
400
#8198FF
oklch(70.7% 0.153 272.5)
-
Step 500
500
#637AFF
oklch(63.2% 0.198 272.1)
-
Step 600
600
#4C5AF7
oklch(55.6% 0.231 272.3)
-
Step 700
700
#3E49D7
oklch(49.2% 0.214 272.2)
-
Step 800
800
#333DAE
oklch(42.8% 0.178 272.4)
-
Step 900
900 (this color)
#283285
oklch(36.4% 0.138 272.3)
-
Step 950
950
#192150
oklch(27.1% 0.086 272.1)
#283285 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) | #004088 | 0.042 |
| Deuteranopia (no green cones) | #003783 | 0.033 |
| Tritanopia (no blue cones) | #004756 | 0.113 |
| Achromatopsia (no color) | #3B3B3B | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283285
#283285
oklch(36.4% 0.138 272.3)
- #4C3C00
#4C3C00
oklch(36.3% 0.074 91.9)
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 #283285, closest first.
No curated palette has a color within ΔE 0.04 of #283285.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.054
- Cobalt #1E488F ΔE 0.059
- Marine Blue #01386A ΔE 0.060
- Dark Slate Blue #483D8B ΔE 0.061
- Sapphire #2138AB ΔE 0.065
- Blueberry #464196 ΔE 0.069
- Royal #0C1793 ΔE 0.070
- Midnight Blue #191970 ΔE 0.076
Use #283285 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.