#304978
Closest named color: Light Navy (#155084). oklch(40.9% 0.085 262.1), rgb(48, 73, 120).
Aa
White text reads best on this color (8.93:1).
About this color
#304978 is a dark, moderately saturated blue. In OKLCH its lightness is 41%, its chroma 0.085 and its hue 262°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy (#155084), ΔE 0.031 away. White text reads best on it, at 8.93:1.
| Hue family | Blues |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.085) |
| Temperature | cool |
| Nearest name | Light Navy (#155084) |
| Black text | 2.34:1 |
| White text | 8.93:1 |
Values
| HEX | #304978 |
| RGB | rgb(48, 73, 120) |
| HSL | hsl(219, 43%, 33%) |
| OKLCH | oklch(40.9% 0.085 262.1) |
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 #304978 | 8.93:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #304978 | 2.34:1 | Fails | Lc 13.6 | Not readable |
| #304978 text on white | 8.93:1 | AAA | Lc 90.3 | Preferred for body text |
| #304978 text on black | 2.34:1 | Fails | Lc -11.9 | 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 800.
-
Step 50
50
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF4
oklch(93.6% 0.015 264.5)
-
Step 200
200
#CFDAEC
oklch(88.5% 0.028 260.3)
-
Step 300
300
#AFC1E2
oklch(80.8% 0.051 262.6)
-
Step 400
400
#86A1D3
oklch(70.7% 0.08 262.5)
-
Step 500
500
#6789C7
oklch(63.1% 0.102 261.9)
-
Step 600
600
#4F72B4
oklch(55.6% 0.111 262.2)
-
Step 700
700
#405F9B
oklch(49.1% 0.103 262.5)
-
Step 800
800 (this color)
#304978
oklch(40.9% 0.085 262.1)
-
Step 900
900
#2E4165
oklch(37.7% 0.067 262.4)
-
Step 950
950
#1B263B
oklch(26.9% 0.042 262.7)
#304978 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) | #354D7A | 0.014 |
| Deuteranopia (no green cones) | #2C4677 | 0.011 |
| Tritanopia (no blue cones) | #00535A | 0.076 |
| Achromatopsia (no color) | #494949 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304978
#304978
oklch(40.9% 0.085 262.1)
- #614500
#614500
oklch(41% 0.085 82.1)
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 #304978, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy #155084 ΔE 0.031
- Twilight Blue #0A437A ΔE 0.040
- Deep Sea Blue #015482 ΔE 0.041
- Dusk Blue #26538D ΔE 0.041
- Cobalt #1E488F ΔE 0.042
- Dark Grey Blue #29465B ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.052
- Dusk #4E5481 ΔE 0.057
Use #304978 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.