#304A74
Closest named color: Light Navy (#155084). oklch(40.9% 0.078 259.6), rgb(48, 74, 116).
Aa
White text reads best on this color (8.90:1).
About this color
#304A74 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.078 and its hue 260°. 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 8.90:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.35:1 |
| White text | 8.90:1 |
Values
| HEX | #304A74 |
| RGB | rgb(48, 74, 116) |
| HSL | hsl(217, 41%, 32%) |
| OKLCH | oklch(40.9% 0.078 259.6) |
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 #304A74 | 8.90:1 | AAA | Lc -94.7 | Preferred for body text |
| Black text on #304A74 | 2.35:1 | Fails | Lc 13.7 | Not readable |
| #304A74 text on white | 8.90:1 | AAA | Lc 90.3 | Preferred for body text |
| #304A74 text on black | 2.35:1 | Fails | Lc -12.0 | 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
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#B0C2DF
oklch(81% 0.046 259.9)
-
Step 400
400
#86A2CE
oklch(70.7% 0.072 259.3)
-
Step 500
500
#688AC2
oklch(63.1% 0.093 260.1)
-
Step 600
600
#4F73AE
oklch(55.5% 0.101 259.9)
-
Step 700
700
#406196
oklch(49.2% 0.094 259.5)
-
Step 800
800 (this color)
#304A74
oklch(40.9% 0.078 259.6)
-
Step 900
900
#2E4262
oklch(37.8% 0.061 259.5)
-
Step 950
950
#1B2739
oklch(27.1% 0.038 258.3)
#304A74 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) | #394D76 | 0.016 |
| Deuteranopia (no green cones) | #304773 | 0.009 |
| Tritanopia (no blue cones) | #025359 | 0.070 |
| Achromatopsia (no color) | #4A4A4A | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304A74
#304A74
oklch(40.9% 0.078 259.6)
- #60440D
#60440D
oklch(40.8% 0.078 79.1)
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 #304A74, 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 0.041
- Twilight Blue #0A437A ΔE 0.043
- Dark Grey Blue #29465B ΔE 0.044
- Dusk Blue #26538D ΔE 0.045
- Cobalt #1E488F ΔE 0.049
- Light Navy Blue #2E5A88 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.056
Use #304A74 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.