#364F8F
Closest named color: Dusk Blue (#26538D). oklch(44.1% 0.11 266), rgb(54, 79, 143).
Aa
White text reads best on this color (7.85:1).
About this color
#364F8F is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.110 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.019 away. White text reads best on it, at 7.85:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.67:1 |
| White text | 7.85:1 |
Values
| HEX | #364F8F |
| RGB | rgb(54, 79, 143) |
| HSL | hsl(223, 45%, 39%) |
| OKLCH | oklch(44.1% 0.11 266) |
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 #364F8F | 7.85:1 | AAA | Lc -91.8 | Preferred for body text |
| Black text on #364F8F | 2.67:1 | Fails | Lc 16.9 | Dividers and decoration only |
| #364F8F text on white | 7.85:1 | AAA | Lc 87.1 | Fine for body text |
| #364F8F text on black | 2.67:1 | Fails | Lc -15.0 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#ADC0EB
oklch(80.8% 0.065 266.3)
-
Step 400
400
#829FE1
oklch(70.7% 0.103 265.7)
-
Step 500
500
#6486D9
oklch(63.2% 0.131 265.9)
-
Step 600
600
#4C6EC6
oklch(55.7% 0.142 266)
-
Step 700
700
#3D5BAB
oklch(49% 0.133 266.2)
-
Step 800
800 (this color)
#364F8F
oklch(44.1% 0.11 266)
-
Step 900
900
#2C3F6F
oklch(37.7% 0.086 266.1)
-
Step 950
950
#1A2541
oklch(27% 0.055 266.6)
#364F8F 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) | #325691 | 0.020 |
| Deuteranopia (no green cones) | #254E8E | 0.019 |
| Tritanopia (no blue cones) | #005D68 | 0.094 |
| Achromatopsia (no color) | #525252 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #364F8F
#364F8F
oklch(44.1% 0.11 266)
- #694E00
#694E00
oklch(44.1% 0.09 85.6)
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 #364F8F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.019
- Cobalt #1E488F ΔE 0.034
- Twilight #4E518B ΔE 0.035
- Denim Blue #3B5B92 ΔE 0.036
- Light Navy #155084 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.036
- Blueberry #464196 ΔE 0.044
- Dusk #4E5481 ΔE 0.045
Use #364F8F 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.