#366299
Closest named color: Dusky Blue (#475F94). oklch(49.1% 0.101 255), rgb(54, 98, 153).
Aa
White text reads best on this color (6.24:1).
About this color
#366299 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.101 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.020 away. White text reads best on it, at 6.24:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.101) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.36:1 |
| White text | 6.24:1 |
Values
| HEX | #366299 |
| RGB | rgb(54, 98, 153) |
| HSL | hsl(213, 48%, 41%) |
| OKLCH | oklch(49.1% 0.101 255) |
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 #366299 | 6.24:1 | AA | Lc -86.1 | Fine for body text |
| Black text on #366299 | 3.36:1 | AA large text | Lc 23.1 | Dividers and decoration only |
| #366299 text on white | 6.24:1 | AA | Lc 80.9 | Fine for body text |
| #366299 text on black | 3.36:1 | AA large text | Lc -21.0 | 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 700.
-
Step 50
50
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EBF3
oklch(93.7% 0.013 251.6)
-
Step 200
200
#CDDAEB
oklch(88.4% 0.027 255.1)
-
Step 300
300
#ACC3E0
oklch(80.9% 0.048 254.3)
-
Step 400
400
#7FA3D1
oklch(70.6% 0.079 254.8)
-
Step 500
500
#5F8CC5
oklch(63.2% 0.1 254.9)
-
Step 600
600
#4475B2
oklch(55.6% 0.109 254.8)
-
Step 700
700 (this color)
#366299
oklch(49.1% 0.101 255)
-
Step 800
800
#2D507C
oklch(42.7% 0.084 255)
-
Step 900
900
#294364
oklch(37.8% 0.065 255)
-
Step 950
950
#18273A
oklch(26.9% 0.041 254.8)
#366299 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) | #4A669B | 0.027 |
| Deuteranopia (no green cones) | #3D5C98 | 0.017 |
| Tritanopia (no blue cones) | #006F76 | 0.083 |
| Achromatopsia (no color) | #606060 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #366299
#366299
oklch(49.1% 0.101 255)
- #825706
#825706
oklch(49.2% 0.101 74.9)
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 #366299, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.020
- Denim Blue #3B5B92 ΔE 0.021
- Denim #3B638C ΔE 0.022
- Peacock Blue #016795 ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.035
- French Blue #436BAD ΔE 0.042
- Mid Blue #276AB3 ΔE 0.043
- Muted Blue #3B719F ΔE 0.044
Use #366299 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.