#284B82
Closest named color: Light Navy (#155084). oklch(41.6% 0.101 259.1), rgb(40, 75, 130).
Aa
White text reads best on this color (8.68:1).
About this color
#284B82 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.101 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.018 away. White text reads best on it, at 8.68:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.41:1 |
| White text | 8.68:1 |
Values
| HEX | #284B82 |
| RGB | rgb(40, 75, 130) |
| HSL | hsl(217, 53%, 33%) |
| OKLCH | oklch(41.6% 0.101 259.1) |
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 #284B82 | 8.68:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #284B82 | 2.41:1 | Fails | Lc 14.4 | Not readable |
| #284B82 text on white | 8.68:1 | AAA | Lc 89.5 | Fine for body text |
| #284B82 text on black | 2.41:1 | Fails | Lc -12.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAEF
oklch(88.4% 0.033 258.4)
-
Step 300
300
#AAC2E7
oklch(80.9% 0.059 259)
-
Step 400
400
#7DA2DB
oklch(70.7% 0.093 258.8)
-
Step 500
500
#5C8AD2
oklch(63.2% 0.12 259.1)
-
Step 600
600
#4172BF
oklch(55.6% 0.131 259.1)
-
Step 700
700
#335FA5
oklch(49% 0.123 259.3)
-
Step 800
800 (this color)
#284B82
oklch(41.6% 0.101 259.1)
-
Step 900
900
#27416B
oklch(37.6% 0.079 259.6)
-
Step 950
950
#17263F
oklch(26.9% 0.051 260.2)
#284B82 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) | #325084 | 0.020 |
| Deuteranopia (no green cones) | #244781 | 0.013 |
| Tritanopia (no blue cones) | #005860 | 0.082 |
| Achromatopsia (no color) | #4B4B4B | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284B82
#284B82
oklch(41.6% 0.101 259.1)
- #654500
#654500
oklch(41.6% 0.086 78.5)
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 #284B82, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.018
- Cobalt #1E488F ΔE 0.026
- Dusk Blue #26538D ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.032
- Twilight Blue #0A437A ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.046
- Twilight #4E518B ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.058
Use #284B82 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.