#284D70
Closest named color: Light Navy (#155084). oklch(41% 0.073 248.8), rgb(40, 77, 112).
Aa
White text reads best on this color (8.80:1).
About this color
#284D70 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.073 and its hue 249°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.034 away. White text reads best on it, at 8.80:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.073) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.38:1 |
| White text | 8.80:1 |
Values
| HEX | #284D70 |
| RGB | rgb(40, 77, 112) |
| HSL | hsl(209, 47%, 30%) |
| OKLCH | oklch(41% 0.073 248.8) |
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 #284D70 | 8.80:1 | AAA | Lc -94.4 | Preferred for body text |
| Black text on #284D70 | 2.38:1 | Fails | Lc 14.0 | Not readable |
| #284D70 text on white | 8.80:1 | AAA | Lc 90.0 | Fine for body text |
| #284D70 text on black | 2.38:1 | Fails | Lc -12.3 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE8
oklch(88.6% 0.023 248.1)
-
Step 300
300
#ACC4DC
oklch(81% 0.043 248.4)
-
Step 400
400
#80A5CA
oklch(70.8% 0.068 248.8)
-
Step 500
500
#5E8EBC
oklch(63.1% 0.087 248.3)
-
Step 600
600
#4477A8
oklch(55.5% 0.094 249)
-
Step 700
700
#356490
oklch(49% 0.088 248.6)
-
Step 800
800 (this color)
#284D70
oklch(41% 0.073 248.8)
-
Step 900
900
#28445E
oklch(37.7% 0.056 247.8)
-
Step 950
950
#182837
oklch(27% 0.035 247.7)
#284D70 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) | #3E4E72 | 0.028 |
| Deuteranopia (no green cones) | #34476F | 0.021 |
| Tritanopia (no blue cones) | #005559 | 0.059 |
| Achromatopsia (no color) | #4A4A4A | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #284D70
#284D70
oklch(41% 0.073 248.8)
- #644219
#644219
oklch(41% 0.073 68.1)
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 #284D70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.034
- Deep Sea Blue #015482 ΔE 0.036
- Dark Grey Blue #29465B ΔE 0.038
- Twilight Blue #0A437A ΔE 0.046
- Dusk Blue #26538D ΔE 0.048
- Charcoal #264653 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.053
Use #284D70 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.