#284B76
Closest named color: Light Navy (#155084). oklch(40.8% 0.083 254.6), rgb(40, 75, 118).
Aa
White text reads best on this color (8.90:1).
About this color
#284B76 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.083 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.027 away. White text reads best on it, at 8.90:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #284B76 |
| RGB | rgb(40, 75, 118) |
| HSL | hsl(213, 49%, 31%) |
| OKLCH | oklch(40.8% 0.083 254.6) |
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 #284B76 | 8.90:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #284B76 | 2.35:1 | Fails | Lc 13.8 | Not readable |
| #284B76 text on white | 8.90:1 | AAA | Lc 90.2 | Preferred for body text |
| #284B76 text on black | 2.35:1 | Fails | Lc -12.1 | 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 800.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CDDAEB
oklch(88.4% 0.027 255.1)
-
Step 300
300
#ACC3E0
oklch(80.9% 0.048 254.3)
-
Step 400
400
#7FA3D1
oklch(70.6% 0.079 254.8)
-
Step 500
500
#5F8CC5
oklch(63.2% 0.1 254.9)
-
Step 600
600
#4475B1
oklch(55.5% 0.108 254.4)
-
Step 700
700
#366298
oklch(49.1% 0.1 254.6)
-
Step 800
800 (this color)
#284B76
oklch(40.8% 0.083 254.6)
-
Step 900
900
#294363
oklch(37.8% 0.064 254.3)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#284B76 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) | #384E78 | 0.022 |
| Deuteranopia (no green cones) | #2E4675 | 0.015 |
| Tritanopia (no blue cones) | #00555B | 0.068 |
| Achromatopsia (no color) | #4A4A4A | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284B76
#284B76
oklch(40.8% 0.083 254.6)
- #644205
#644205
oklch(40.8% 0.083 74.6)
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 #284B76, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.033
- Twilight Blue #0A437A ΔE 0.037
- Dusk Blue #26538D ΔE 0.041
- Cobalt #1E488F ΔE 0.045
- Dark Grey Blue #29465B ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.051
- YInMn Blue #415A77 ΔE 0.058
Use #284B76 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.