#304068
Closest named color: Dark Grey Blue (#29465B). oklch(37.8% 0.072 266.5), rgb(48, 64, 104).
Aa
White text reads best on this color (10.19:1).
About this color
#304068 is a dark, moderately saturated blue. In OKLCH its lightness is 38%, its chroma 0.072 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Grey Blue (#29465B), ΔE 0.034 away. White text reads best on it, at 10.19:1.
| Hue family | Blues |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dark Grey Blue (#29465B) |
| Black text | 2.05:1 |
| White text | 10.19:1 |
Values
| HEX | #304068 |
| RGB | rgb(48, 64, 104) |
| HSL | hsl(223, 37%, 30%) |
| OKLCH | oklch(37.8% 0.072 266.5) |
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 #304068 | 10.19:1 | AAA | Lc -97.7 | Preferred for body text |
| Black text on #304068 | 2.05:1 | Fails | Lc 10.3 | Not readable |
| #304068 text on white | 10.19:1 | AAA | Lc 93.6 | Preferred for body text |
| #304068 text on black | 2.05:1 | Fails | Lc -8.9 | 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 900.
-
Step 50
50
#F3F5FA
oklch(97% 0.007 268.5)
-
Step 100
100
#E5EAF5
oklch(93.6% 0.016 266.3)
-
Step 200
200
#D0D9EE
oklch(88.5% 0.031 267.2)
-
Step 300
300
#B1C0E4
oklch(80.8% 0.054 267.4)
-
Step 400
400
#889FD7
oklch(70.6% 0.086 267)
-
Step 500
500
#6B87CC
oklch(63.1% 0.109 266.5)
-
Step 600
600
#5370B9
oklch(55.7% 0.119 266.3)
-
Step 700
700
#435DA0
oklch(49.1% 0.112 266.4)
-
Step 800
800
#374C81
oklch(42.6% 0.092 266.3)
-
Step 900
900 (this color)
#304068
oklch(37.8% 0.072 266.5)
-
Step 950
950
#1C263D
oklch(27.1% 0.045 265.6)
#304068 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) | #30446A | 0.012 |
| Deuteranopia (no green cones) | #2A3F67 | 0.009 |
| Tritanopia (no blue cones) | #17494F | 0.065 |
| Achromatopsia (no color) | #414141 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304068
#304068
oklch(37.8% 0.072 266.5)
- #523F09
#523F09
oklch(37.8% 0.072 87.6)
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 #304068, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Grey Blue #29465B ΔE 0.034
- Twilight Blue #0A437A ΔE 0.042
- Charcoal #264653 ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.051
- Marine Blue #01386A ΔE 0.053
- Dark Blue Grey #1F3B4D ΔE 0.054
- Light Navy #155084 ΔE 0.061
- Cobalt #1E488F ΔE 0.067
Use #304068 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.