#284B72
Closest named color: Light Navy (#155084). oklch(40.6% 0.078 252.5), rgb(40, 75, 114).
Aa
White text reads best on this color (8.97:1).
About this color
#284B72 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.078 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.032 away. White text reads best on it, at 8.97:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.33:1 |
| White text | 8.97:1 |
Values
| HEX | #284B72 |
| RGB | rgb(40, 75, 114) |
| HSL | hsl(212, 48%, 30%) |
| OKLCH | oklch(40.6% 0.078 252.5) |
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 #284B72 | 8.97:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #284B72 | 2.33:1 | Fails | Lc 13.5 | Not readable |
| #284B72 text on white | 8.97:1 | AAA | Lc 90.4 | Preferred for body text |
| #284B72 text on black | 2.33:1 | Fails | Lc -11.9 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CEDBEA
oklch(88.6% 0.025 251.9)
-
Step 300
300
#ACC3DE
oklch(80.9% 0.046 252.5)
-
Step 400
400
#80A4CD
oklch(70.7% 0.072 252.1)
-
Step 500
500
#5F8DC0
oklch(63.1% 0.092 251.8)
-
Step 600
600
#4576AD
oklch(55.6% 0.101 252.5)
-
Step 700
700
#376394
oklch(49.1% 0.093 252.5)
-
Step 800
800 (this color)
#284B72
oklch(40.6% 0.078 252.5)
-
Step 900
900
#294361
oklch(37.6% 0.061 252.9)
-
Step 950
950
#182739
oklch(26.8% 0.04 253.6)
#284B72 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) | #3A4D74 | 0.023 |
| Deuteranopia (no green cones) | #304671 | 0.016 |
| Tritanopia (no blue cones) | #005459 | 0.063 |
| Achromatopsia (no color) | #494949 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284B72
#284B72
oklch(40.6% 0.078 252.5)
- #634210
#634210
oklch(40.7% 0.078 72.7)
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 #284B72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.032
- Deep Sea Blue #015482 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.039
- Twilight Blue #0A437A ΔE 0.040
- Dusk Blue #26538D ΔE 0.047
- Cobalt #1E488F ΔE 0.052
- Charcoal #264653 ΔE 0.053
- Light Navy Blue #2E5A88 ΔE 0.054
Use #284B72 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.