#304495
Closest named color: Cobalt (#1E488F). oklch(41.8% 0.135 269.3), rgb(48, 68, 149).
Aa
White text reads best on this color (8.79:1).
About this color
#304495 is a dark, moderately saturated blue. In OKLCH its lightness is 42%, its chroma 0.135 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.023 away. White text reads best on it, at 8.79:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #304495 |
| RGB | rgb(48, 68, 149) |
| HSL | hsl(228, 51%, 39%) |
| OKLCH | oklch(41.8% 0.135 269.3) |
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 #304495 | 8.79:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #304495 | 2.38:1 | Fails | Lc 14.2 | Not readable |
| #304495 text on white | 8.79:1 | AAA | Lc 89.8 | Fine for body text |
| #304495 text on black | 2.38:1 | Fails | Lc -12.5 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ACBFF5
oklch(80.9% 0.079 269.5)
-
Step 400
400
#819CEF
oklch(70.7% 0.126 269.3)
-
Step 500
500
#6381EA
oklch(63.1% 0.161 269.4)
-
Step 600
600
#4B68D8
oklch(55.6% 0.175 269.1)
-
Step 700
700
#3D55BC
oklch(49% 0.164 269.5)
-
Step 800
800 (this color)
#304495
oklch(41.8% 0.135 269.3)
-
Step 900
900
#2C3C79
oklch(37.7% 0.105 269.7)
-
Step 950
950
#192447
oklch(27.1% 0.067 268.5)
#304495 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) | #0C4F98 | 0.036 |
| Deuteranopia (no green cones) | #004693 | 0.034 |
| Tritanopia (no blue cones) | #005765 | 0.112 |
| Achromatopsia (no color) | #4A4A4A | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304495
#304495
oklch(41.8% 0.135 269.3)
- #5F4A00
#5F4A00
oklch(41.9% 0.086 90)
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 #304495, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.023
- Blueberry #464196 ΔE 0.031
- Dark Slate Blue #483D8B ΔE 0.039
- Dusk Blue #26538D ΔE 0.045
- Light Navy #155084 ΔE 0.051
- Sapphire #2138AB ΔE 0.051
- Twilight Blue #0A437A ΔE 0.058
- Twilight #4E518B ΔE 0.062
Use #304495 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.