#36668B
Closest named color: Denim (#3B638C). oklch(49.3% 0.079 243.7), rgb(54, 102, 139).
Aa
White text reads best on this color (6.12:1).
About this color
#36668B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.079 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.010 away. White text reads best on it, at 6.12:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.43:1 |
| White text | 6.12:1 |
Values
| HEX | #36668B |
| RGB | rgb(54, 102, 139) |
| HSL | hsl(206, 44%, 38%) |
| OKLCH | oklch(49.3% 0.079 243.7) |
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 #36668B | 6.12:1 | AA | Lc -85.6 | Fine for body text |
| Black text on #36668B | 3.43:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #36668B text on white | 6.12:1 | AA | Lc 80.4 | Fine for body text |
| #36668B text on black | 3.43:1 | AA large text | Lc -21.4 | 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
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CEDBE6
oklch(88.5% 0.021 243.4)
-
Step 300
300
#ACC4D8
oklch(80.9% 0.039 243.3)
-
Step 400
400
#80A5C5
oklch(70.6% 0.062 244.9)
-
Step 500
500
#5F8FB6
oklch(63.1% 0.079 244)
-
Step 600
600
#4479A2
oklch(55.7% 0.086 243.5)
-
Step 700
700 (this color)
#36668B
oklch(49.3% 0.079 243.7)
-
Step 800
800
#2D5370
oklch(42.7% 0.065 243.2)
-
Step 900
900
#29455B
oklch(37.8% 0.051 243.4)
-
Step 950
950
#182835
oklch(26.9% 0.033 243.9)
#36668B 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) | #56678D | 0.038 |
| Deuteranopia (no green cones) | #4A5E8A | 0.030 |
| Tritanopia (no blue cones) | #006F73 | 0.062 |
| Achromatopsia (no color) | #626262 | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #36668B
#36668B
oklch(49.3% 0.079 243.7)
- #81572E
#81572E
oklch(49.4% 0.079 63.5)
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 #36668B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.010
- Peacock Blue #016795 ΔE 0.030
- Dusky Blue #475F94 ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.038
- Ocean Blue #03719C ΔE 0.040
- YInMn Blue #415A77 ΔE 0.042
- Muted Blue #3B719F ΔE 0.042
Use #36668B 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.