#283968
Closest named color: Marine Blue (#01386A). oklch(35.6% 0.085 267.1), rgb(40, 57, 104).
Aa
White text reads best on this color (11.19:1).
About this color
#283968 is a dark, moderately saturated blue. In OKLCH its lightness is 36%, its chroma 0.085 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Marine Blue (#01386A), ΔE 0.033 away. White text reads best on it, at 11.19:1.
| Hue family | Blues |
| Lightness | dark (36%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Marine Blue (#01386A) |
| Black text | 1.87:1 |
| White text | 11.19:1 |
Values
| HEX | #283968 |
| RGB | rgb(40, 57, 104) |
| HSL | hsl(224, 44%, 28%) |
| OKLCH | oklch(35.6% 0.085 267.1) |
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 #283968 | 11.19:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #283968 | 1.87:1 | Fails | Lc 8.2 | Not readable |
| #283968 text on white | 11.19:1 | AAA | Lc 95.7 | Preferred for body text |
| #283968 text on black | 1.87:1 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F1
oklch(88.5% 0.035 267.6)
-
Step 300
300
#AEC0EB
oklch(80.9% 0.064 267.2)
-
Step 400
400
#849FE0
oklch(70.8% 0.1 266.6)
-
Step 500
500
#6685D8
oklch(63.1% 0.13 267.2)
-
Step 600
600
#4E6DC5
oklch(55.5% 0.141 267.1)
-
Step 700
700
#3F5BAA
oklch(49.1% 0.13 266.9)
-
Step 800
800
#344B8A
oklch(42.8% 0.108 266.8)
-
Step 900
900 (this color)
#283968
oklch(35.6% 0.085 267.1)
-
Step 950
950
#1B2541
oklch(27% 0.054 267.8)
#283968 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) | #243E6A | 0.015 |
| Deuteranopia (no green cones) | #1C3867 | 0.015 |
| Tritanopia (no blue cones) | #00434B | 0.074 |
| Achromatopsia (no color) | #3B3B3B | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #283968
#283968
oklch(35.6% 0.085 267.1)
- #4C3900
#4C3900
oklch(35.6% 0.073 87.6)
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 #283968, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Marine Blue #01386A ΔE 0.033
- Prussian Blue #1D3557 ΔE 0.035
- Twilight Blue #0A437A ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.052
- Marine #042E60 ΔE 0.054
- Midnight Green #073B4C ΔE 0.062
- Charcoal #264653 ΔE 0.062
Use #283968 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.