#283069
Closest named color: Marine Blue (#01386A). oklch(33.6% 0.099 273.8), rgb(40, 48, 105).
Aa
White text reads best on this color (12.23:1).
About this color
#283069 is a dark, moderately saturated blue. In OKLCH its lightness is 34%, its chroma 0.099 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.038 away. White text reads best on it, at 12.23:1.
| Hue family | Blues |
| Lightness | dark (34%) |
| Chroma | moderately saturated (0.099) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.71:1 |
| White text | 12.23:1 |
Values
| HEX | #283069 |
| RGB | rgb(40, 48, 105) |
| HSL | hsl(233, 45%, 28%) |
| OKLCH | oklch(33.6% 0.099 273.8) |
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 #283069 | 12.23:1 | AAA | Lc -101.2 | Preferred for body text |
| Black text on #283069 | 1.71:1 | Fails | Lc 0.0 | Not readable |
| #283069 text on white | 12.23:1 | AAA | Lc 97.7 | Preferred for body text |
| #283069 text on black | 1.71:1 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF1
oklch(80.9% 0.074 273.5)
-
Step 400
400
#899AEB
oklch(70.6% 0.12 273.9)
-
Step 500
500
#6E7FE4
oklch(63% 0.152 274)
-
Step 600
600
#5766D2
oklch(55.5% 0.165 273.8)
-
Step 700
700
#4854B6
oklch(49% 0.154 274)
-
Step 800
800
#3B4693
oklch(42.8% 0.126 273.7)
-
Step 900
900 (this color)
#283069
oklch(33.6% 0.099 273.8)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#283069 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) | #11386B | 0.031 |
| Deuteranopia (no green cones) | #033368 | 0.035 |
| Tritanopia (no blue cones) | #003D47 | 0.088 |
| Achromatopsia (no color) | #353535 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283069
#283069
oklch(33.6% 0.099 273.8)
- #433600
#433600
oklch(33.7% 0.069 93.9)
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 #283069, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.038
- Prussian Blue #1D3557 ΔE 0.040
- Marine #042E60 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.060
- Midnight Blue #191970 ΔE 0.065
- Dark Blue Grey #1F3B4D ΔE 0.067
- Space Cadet #2B2D42 ΔE 0.069
- Gunmetal #293241 ΔE 0.073
Use #283069 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.