#304779
Closest named color: Light Navy (#155084). oklch(40.5% 0.089 264.2), rgb(48, 71, 121).
Aa
White text reads best on this color (9.11:1).
About this color
#304779 is a dark, moderately saturated blue. In OKLCH its lightness is 40%, its chroma 0.089 and its hue 264°. 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 9.11:1.
| Hue family | Blues |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.30:1 |
| White text | 9.11:1 |
Values
| HEX | #304779 |
| RGB | rgb(48, 71, 121) |
| HSL | hsl(221, 43%, 33%) |
| OKLCH | oklch(40.5% 0.089 264.2) |
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 #304779 | 9.11:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #304779 | 2.30:1 | Fails | Lc 13.1 | Not readable |
| #304779 text on white | 9.11:1 | AAA | Lc 90.8 | Preferred for body text |
| #304779 text on black | 2.30:1 | Fails | Lc -11.5 | 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
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#D0D9ED
oklch(88.5% 0.029 266.4)
-
Step 300
300
#B0C1E3
oklch(80.9% 0.052 264.2)
-
Step 400
400
#86A0D5
oklch(70.6% 0.083 264.1)
-
Step 500
500
#6988CA
oklch(63.1% 0.106 264.4)
-
Step 600
600
#5071B7
oklch(55.6% 0.116 263.9)
-
Step 700
700
#415E9E
oklch(49.1% 0.109 264.4)
-
Step 800
800 (this color)
#304779
oklch(40.5% 0.089 264.2)
-
Step 900
900
#2F4167
oklch(37.9% 0.069 264.1)
-
Step 950
950
#1B263C
oklch(27% 0.044 263.4)
#304779 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) | #324C7B | 0.015 |
| Deuteranopia (no green cones) | #284578 | 0.012 |
| Tritanopia (no blue cones) | #00525A | 0.079 |
| Achromatopsia (no color) | #484848 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304779
#304779
oklch(40.5% 0.089 264.2)
- #5E4400
#5E4400
oklch(40.4% 0.083 83.7)
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 #304779, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.034
- Twilight Blue #0A437A ΔE 0.036
- Cobalt #1E488F ΔE 0.039
- Dusk Blue #26538D ΔE 0.043
- Deep Sea Blue #015482 ΔE 0.044
- Dark Grey Blue #29465B ΔE 0.053
- Dark Slate Blue #483D8B ΔE 0.054
- Light Navy Blue #2E5A88 ΔE 0.057
Use #304779 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.