#304994
Closest named color: Cobalt (#1E488F). oklch(42.8% 0.127 267.1), rgb(48, 73, 148).
Aa
White text reads best on this color (8.37:1).
About this color
#304994 is a dark, moderately saturated blue. In OKLCH its lightness is 43%, its chroma 0.127 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cobalt (#1E488F), ΔE 0.021 away. White text reads best on it, at 8.37:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Cobalt (#1E488F) |
| Black text | 2.50:1 |
| White text | 8.37:1 |
Values
| HEX | #304994 |
| RGB | rgb(48, 73, 148) |
| HSL | hsl(225, 51%, 38%) |
| OKLCH | oklch(42.8% 0.127 267.1) |
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 #304994 | 8.37:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #304994 | 2.50:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #304994 text on white | 8.37:1 | AAA | Lc 88.6 | Fine for body text |
| #304994 text on black | 2.50:1 | Fails | Lc -13.6 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ABC0F2
oklch(80.9% 0.075 267)
-
Step 400
400
#7F9EEB
oklch(70.8% 0.119 266.7)
-
Step 500
500
#6083E5
oklch(63.1% 0.153 267.2)
-
Step 600
600
#486BD3
oklch(55.7% 0.165 267)
-
Step 700
700
#3A58B6
oklch(49% 0.153 267.2)
-
Step 800
800 (this color)
#304994
oklch(42.8% 0.127 267.1)
-
Step 900
900
#2A3E76
oklch(37.8% 0.099 266.9)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#304994 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) | #1F5297 | 0.027 |
| Deuteranopia (no green cones) | #024992 | 0.032 |
| Tritanopia (no blue cones) | #005A67 | 0.105 |
| Achromatopsia (no color) | #4E4E4E | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304994
#304994
oklch(42.8% 0.127 267.1)
- #644B00
#644B00
oklch(42.8% 0.087 86.6)
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 #304994, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cobalt #1E488F ΔE 0.021
- Dusk Blue #26538D ΔE 0.032
- Blueberry #464196 ΔE 0.034
- Light Navy #155084 ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.044
- Twilight #4E518B ΔE 0.052
- Deep Sea Blue #015482 ΔE 0.054
- Denim Blue #3B5B92 ΔE 0.055
Use #304994 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.