#282F76
Closest named color: Marine Blue (#01386A). oklch(34.4% 0.12 274), rgb(40, 47, 118).
Aa
White text reads best on this color (11.94:1).
About this color
#282F76 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.120 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.046 away. White text reads best on it, at 11.94:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.120) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.75:1 |
| White text | 11.94:1 |
Values
| HEX | #282F76 |
| RGB | rgb(40, 47, 118) |
| HSL | hsl(235, 49%, 31%) |
| OKLCH | oklch(34.4% 0.12 274) |
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 #282F76 | 11.94:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #282F76 | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #282F76 text on white | 11.94:1 | AAA | Lc 97.0 | Preferred for body text |
| #282F76 text on black | 1.75:1 | Fails | Lc 0.0 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CED7FB
oklch(88.4% 0.051 274.3)
-
Step 300
300
#AEBDFB
oklch(80.9% 0.089 273.7)
-
Step 400
400
#8598FA
oklch(70.7% 0.145 273.8)
-
Step 500
500
#697BF7
oklch(63.2% 0.184 273.7)
-
Step 600
600
#5460E6
oklch(55.7% 0.201 274)
-
Step 700
700
#454EC8
oklch(49.1% 0.187 274)
-
Step 800
800
#3841A1
oklch(42.7% 0.154 273.9)
-
Step 900
900 (this color)
#282F76
oklch(34.4% 0.12 274)
-
Step 950
950
#1C224B
oklch(27.1% 0.076 274)
#282F76 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) | #003A78 | 0.040 |
| Deuteranopia (no green cones) | #003375 | 0.035 |
| Tritanopia (no blue cones) | #00404D | 0.101 |
| Achromatopsia (no color) | #373737 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #282F76
#282F76
oklch(34.4% 0.12 274)
- #453800
#453800
oklch(34.5% 0.071 94.4)
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 #282F76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.046
- Marine #042E60 ΔE 0.055
- Twilight Blue #0A437A ΔE 0.057
- Midnight Blue #191970 ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.075
- Cobalt #1E488F ΔE 0.076
- Royal #0C1793 ΔE 0.078
Use #282F76 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.