#284281
Closest named color: Twilight Blue (#0A437A). oklch(39.4% 0.111 264.9), rgb(40, 66, 129).
Aa
White text reads best on this color (9.60:1).
About this color
#284281 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.111 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.027 away. White text reads best on it, at 9.60:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.111) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.18:1 |
| White text | 9.60:1 |
Values
| HEX | #284281 |
| RGB | rgb(40, 66, 129) |
| HSL | hsl(222, 53%, 33%) |
| OKLCH | oklch(39.4% 0.111 264.9) |
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 #284281 | 9.60:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #284281 | 2.18:1 | Fails | Lc 12.0 | Not readable |
| #284281 text on white | 9.60:1 | AAA | Lc 92.0 | Preferred for body text |
| #284281 text on black | 2.18:1 | Fails | Lc -10.4 | 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
#F2F6FD
oklch(97.2% 0.01 261.8)
-
Step 100
100
#E2EAFB
oklch(93.6% 0.025 265.6)
-
Step 200
200
#CAD9F9
oklch(88.4% 0.047 265.5)
-
Step 300
300
#A6C0F7
oklch(80.8% 0.083 264.9)
-
Step 400
400
#779EF3
oklch(70.7% 0.132 264.6)
-
Step 500
500
#5683EF
oklch(63.2% 0.169 264.9)
-
Step 600
600
#3C69DE
oklch(55.5% 0.186 265)
-
Step 700
700
#2F57C0
oklch(49.1% 0.171 264.9)
-
Step 800
800
#27489C
oklch(42.8% 0.143 264.8)
-
Step 900
900 (this color)
#284281
oklch(39.4% 0.111 264.9)
-
Step 950
950
#152448
oklch(26.9% 0.07 265)
#284281 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) | #224983 | 0.020 |
| Deuteranopia (no green cones) | #0F4180 | 0.022 |
| Tritanopia (no blue cones) | #00515B | 0.092 |
| Achromatopsia (no color) | #454545 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284281
#284281
oklch(39.4% 0.111 264.9)
- #5A4200
#5A4200
oklch(39.5% 0.081 85)
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 #284281, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.027
- Cobalt #1E488F ΔE 0.027
- Light Navy #155084 ΔE 0.041
- Dark Slate Blue #483D8B ΔE 0.050
- Dusk Blue #26538D ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.054
- Blueberry #464196 ΔE 0.055
- Marine Blue #01386A ΔE 0.060
Use #284281 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.