#366691
Closest named color: Denim (#3B638C). oklch(49.6% 0.087 247.5), rgb(54, 102, 145).
Aa
White text reads best on this color (6.05:1).
About this color
#366691 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.087 and its hue 248°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.011 away. White text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.087) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.46:1 |
| White text | 6.05:1 |
Values
| HEX | #366691 |
| RGB | rgb(54, 102, 145) |
| HSL | hsl(208, 46%, 39%) |
| OKLCH | oklch(49.6% 0.087 247.5) |
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 #366691 | 6.05:1 | AA | Lc -85.3 | Fine for body text |
| Black text on #366691 | 3.46:1 | AA large text | Lc 24.0 | Dividers and decoration only |
| #366691 text on white | 6.05:1 | AA | Lc 80.1 | Fine for body text |
| #366691 text on black | 3.46:1 | AA large text | Lc -21.7 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CDDBE8
oklch(88.5% 0.023 246.1)
-
Step 300
300
#ACC4DB
oklch(81% 0.042 247.2)
-
Step 400
400
#7FA5C9
oklch(70.7% 0.067 247.4)
-
Step 500
500
#5E8EBB
oklch(63.1% 0.086 247.8)
-
Step 600
600
#4378A7
oklch(55.7% 0.093 247.1)
-
Step 700
700 (this color)
#366691
oklch(49.6% 0.087 247.5)
-
Step 800
800
#2C5274
oklch(42.6% 0.072 247.3)
-
Step 900
900
#28445E
oklch(37.7% 0.056 247.8)
-
Step 950
950
#182837
oklch(27% 0.035 247.7)
#366691 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) | #536793 | 0.034 |
| Deuteranopia (no green cones) | #475E90 | 0.028 |
| Tritanopia (no blue cones) | #007075 | 0.069 |
| Achromatopsia (no color) | #626262 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #366691
#366691
oklch(49.6% 0.087 247.5)
- #835825
#835825
oklch(49.7% 0.087 67.8)
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 #366691, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.011
- Dusky Blue #475F94 ΔE 0.027
- Peacock Blue #016795 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.033
- Muted Blue #3B719F ΔE 0.037
- Ocean Blue #03719C ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.038
- Sea Blue #047495 ΔE 0.044
Use #366691 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.