#364F9B
Closest named color: Dusk Blue (#26538D). oklch(45% 0.127 267.4), rgb(54, 79, 155).
Aa
White text reads best on this color (7.64:1).
About this color
#364F9B is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.127 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.032 away. White text reads best on it, at 7.64:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.74:1 |
| White text | 7.64:1 |
Values
| HEX | #364F9B |
| RGB | rgb(54, 79, 155) |
| HSL | hsl(225, 48%, 41%) |
| OKLCH | oklch(45% 0.127 267.4) |
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 #364F9B | 7.64:1 | AAA | Lc -91.1 | Preferred for body text |
| Black text on #364F9B | 2.74:1 | Fails | Lc 17.7 | Dividers and decoration only |
| #364F9B text on white | 7.64:1 | AAA | Lc 86.3 | Fine for body text |
| #364F9B text on black | 2.74:1 | Fails | Lc -15.8 | Dividers and decoration only |
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
#809DEB
oklch(70.6% 0.119 267.8)
-
Step 500
500
#6183E5
oklch(63.1% 0.152 267.5)
-
Step 600
600
#496AD3
oklch(55.6% 0.166 267.6)
-
Step 700
700
#3A58B7
oklch(49.1% 0.154 267.3)
-
Step 800
800 (this color)
#364F9B
oklch(45% 0.127 267.4)
-
Step 900
900
#2A3D76
oklch(37.6% 0.1 267.6)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#364F9B 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) | #28589E | 0.026 |
| Deuteranopia (no green cones) | #124F99 | 0.031 |
| Tritanopia (no blue cones) | #00616D | 0.108 |
| Achromatopsia (no color) | #535353 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #364F9B
#364F9B
oklch(45% 0.127 267.4)
- #6B5100
#6B5100
oklch(45% 0.092 87.1)
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 #364F9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.032
- Cobalt #1E488F ΔE 0.039
- Blueberry #464196 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.041
- Twilight #4E518B ΔE 0.042
- Light Navy Blue #2E5A88 ΔE 0.049
- Light Navy #155084 ΔE 0.050
- Dark Slate Blue #483D8B ΔE 0.054
Use #364F9B 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.