#304C7D
Closest named color: Light Navy (#155084). oklch(41.9% 0.089 260.9), rgb(48, 76, 125).
Aa
White text reads best on this color (8.55:1).
About this color
#304C7D is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.089 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.025 away. White text reads best on it, at 8.55:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #304C7D |
| RGB | rgb(48, 76, 125) |
| HSL | hsl(218, 45%, 34%) |
| OKLCH | oklch(41.9% 0.089 260.9) |
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 #304C7D | 8.55:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #304C7D | 2.45:1 | Fails | Lc 14.7 | Not readable |
| #304C7D text on white | 8.55:1 | AAA | Lc 89.2 | Fine for body text |
| #304C7D text on black | 2.45:1 | Fails | Lc -13.0 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CFDAED
oklch(88.6% 0.029 261.5)
-
Step 300
300
#AEC2E3
oklch(81% 0.052 260.4)
-
Step 400
400
#83A1D5
oklch(70.6% 0.084 261.2)
-
Step 500
500
#6489CA
oklch(63% 0.107 261.2)
-
Step 600
600
#4B72B6
oklch(55.5% 0.115 260.9)
-
Step 700
700
#3C5F9D
oklch(49% 0.108 261.1)
-
Step 800
800 (this color)
#304C7D
oklch(41.9% 0.089 260.9)
-
Step 900
900
#2C4166
oklch(37.6% 0.069 261.2)
-
Step 950
950
#1A263C
oklch(26.9% 0.045 261.9)
#304C7D 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) | #37507F | 0.016 |
| Deuteranopia (no green cones) | #2D497C | 0.010 |
| Tritanopia (no blue cones) | #00575E | 0.078 |
| Achromatopsia (no color) | #4C4C4C | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304C7D
#304C7D
oklch(41.9% 0.089 260.9)
- #654700
#654700
oklch(42% 0.087 81)
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 #304C7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.025
- Dusk Blue #26538D ΔE 0.030
- Deep Sea Blue #015482 ΔE 0.034
- Cobalt #1E488F ΔE 0.038
- Light Navy Blue #2E5A88 ΔE 0.042
- Twilight Blue #0A437A ΔE 0.045
- Dusk #4E5481 ΔE 0.050
- Twilight #4E518B ΔE 0.051
Use #304C7D 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.