#304172
Closest named color: Twilight Blue (#0A437A). oklch(38.6% 0.086 267.8), rgb(48, 65, 114).
Aa
White text reads best on this color (9.88:1).
About this color
#304172 is a dark, moderately saturated blue. In OKLCH its lightness is 39%, its chroma 0.086 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight Blue (#0A437A), ΔE 0.034 away. White text reads best on it, at 9.88:1.
| Hue family | Blues |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Twilight Blue (#0A437A) |
| Black text | 2.12:1 |
| White text | 9.88:1 |
Values
| HEX | #304172 |
| RGB | rgb(48, 65, 114) |
| HSL | hsl(225, 41%, 32%) |
| OKLCH | oklch(38.6% 0.086 267.8) |
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 #304172 | 9.88:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #304172 | 2.12:1 | Fails | Lc 11.2 | Not readable |
| #304172 text on white | 9.88:1 | AAA | Lc 92.8 | Preferred for body text |
| #304172 text on black | 2.12:1 | Fails | Lc -9.7 | 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 900.
-
Step 50
50
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F2
oklch(88.5% 0.036 268.3)
-
Step 300
300
#AEC0EB
oklch(80.9% 0.064 267.2)
-
Step 400
400
#859EE2
oklch(70.7% 0.104 268.2)
-
Step 500
500
#6785D9
oklch(63.2% 0.131 267.7)
-
Step 600
600
#4F6DC7
oklch(55.7% 0.144 267.7)
-
Step 700
700
#405AAC
oklch(49.1% 0.134 268)
-
Step 800
800
#354A8B
oklch(42.7% 0.111 268)
-
Step 900
900 (this color)
#304172
oklch(38.6% 0.086 267.8)
-
Step 950
950
#1B2541
oklch(27% 0.054 267.8)
#304172 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) | #2C4674 | 0.015 |
| Deuteranopia (no green cones) | #244071 | 0.016 |
| Tritanopia (no blue cones) | #0A4C54 | 0.077 |
| Achromatopsia (no color) | #434343 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304172
#304172
oklch(38.6% 0.086 267.8)
- #564100
#564100
oklch(38.7% 0.079 87.8)
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 #304172, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight Blue #0A437A ΔE 0.034
- Dark Grey Blue #29465B ΔE 0.047
- Light Navy #155084 ΔE 0.050
- Cobalt #1E488F ΔE 0.051
- Marine Blue #01386A ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.058
- Deep Sea Blue #015482 ΔE 0.061
- Charcoal #264653 ΔE 0.062
Use #304172 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.