#284D84
Closest named color: Light Navy (#155084). oklch(42.2% 0.101 258.2), rgb(40, 77, 132).
Aa
White text reads best on this color (8.45:1).
About this color
#284D84 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.101 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.016 away. White text reads best on it, at 8.45:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.48:1 |
| White text | 8.45:1 |
Values
| HEX | #284D84 |
| RGB | rgb(40, 77, 132) |
| HSL | hsl(216, 53%, 34%) |
| OKLCH | oklch(42.2% 0.101 258.2) |
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 #284D84 | 8.45:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #284D84 | 2.48:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #284D84 text on white | 8.45:1 | AAA | Lc 88.9 | Fine for body text |
| #284D84 text on black | 2.48:1 | Fails | Lc -13.3 | 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
#A9C2E7
oklch(80.8% 0.059 258.1)
-
Step 400
400
#7CA2DC
oklch(70.7% 0.095 258.6)
-
Step 500
500
#5A8AD2
oklch(63.1% 0.121 258.3)
-
Step 600
600
#3F73BF
oklch(55.7% 0.131 257.9)
-
Step 700
700
#3160A5
oklch(49.2% 0.122 258.1)
-
Step 800
800 (this color)
#284D84
oklch(42.2% 0.101 258.2)
-
Step 900
900
#26426B
oklch(37.8% 0.078 257.9)
-
Step 950
950
#17273F
oklch(27.2% 0.05 258.3)
#284D84 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) | #345286 | 0.021 |
| Deuteranopia (no green cones) | #264983 | 0.012 |
| Tritanopia (no blue cones) | #005A62 | 0.082 |
| Achromatopsia (no color) | #4D4D4D | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284D84
#284D84
oklch(42.2% 0.101 258.2)
- #674600
#674600
oklch(42% 0.088 78)
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 #284D84, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.016
- Dusk Blue #26538D ΔE 0.021
- Cobalt #1E488F ΔE 0.027
- Deep Sea Blue #015482 ΔE 0.028
- Light Navy Blue #2E5A88 ΔE 0.040
- Twilight Blue #0A437A ΔE 0.043
- Denim Blue #3B5B92 ΔE 0.052
- Twilight #4E518B ΔE 0.053
Use #284D84 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.