#284E7A
Closest named color: Light Navy (#155084). oklch(41.8% 0.086 253.5), rgb(40, 78, 122).
Aa
White text reads best on this color (8.53:1).
About this color
#284E7A is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.086 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.020 away. White text reads best on it, at 8.53:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.46:1 |
| White text | 8.53:1 |
Values
| HEX | #284E7A |
| RGB | rgb(40, 78, 122) |
| HSL | hsl(212, 51%, 32%) |
| OKLCH | oklch(41.8% 0.086 253.5) |
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 #284E7A | 8.53:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #284E7A | 2.46:1 | Fails | Lc 14.8 | Not readable |
| #284E7A text on white | 8.53:1 | AAA | Lc 89.1 | Fine for body text |
| #284E7A text on black | 2.46:1 | Fails | Lc -13.1 | 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
#E3EBF4
oklch(93.7% 0.015 251.2)
-
Step 200
200
#CDDBEC
oklch(88.6% 0.028 253.2)
-
Step 300
300
#ABC3E1
oklch(80.9% 0.05 254.1)
-
Step 400
400
#7DA4D2
oklch(70.8% 0.08 253)
-
Step 500
500
#5C8CC6
oklch(63% 0.102 253.9)
-
Step 600
600
#4175B3
oklch(55.5% 0.112 254)
-
Step 700
700
#32629A
oklch(49% 0.104 253.7)
-
Step 800
800 (this color)
#284E7A
oklch(41.8% 0.086 253.5)
-
Step 900
900
#274364
oklch(37.7% 0.066 253.5)
-
Step 950
950
#17273B
oklch(26.9% 0.043 254.6)
#284E7A 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) | #3B517C | 0.025 |
| Deuteranopia (no green cones) | #304979 | 0.016 |
| Tritanopia (no blue cones) | #00585E | 0.068 |
| Achromatopsia (no color) | #4C4C4C | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284E7A
#284E7A
oklch(41.8% 0.086 253.5)
- #684406
#684406
oklch(41.8% 0.086 73.5)
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 #284E7A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.020
- Deep Sea Blue #015482 ΔE 0.026
- Dusk Blue #26538D ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.041
- Cobalt #1E488F ΔE 0.043
- Twilight Blue #0A437A ΔE 0.044
- YInMn Blue #415A77 ΔE 0.051
- Dark Grey Blue #29465B ΔE 0.053
Use #284E7A 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.