#3D668F
Closest named color: Denim (#3B638C). oklch(49.9% 0.081 249.7), rgb(61, 102, 143).
Aa
White text reads best on this color (6.00:1).
About this color
#3D668F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 50%, its chroma 0.081 and its hue 250°. 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 6.00:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.49:1 |
| White text | 6.00:1 |
Values
| HEX | #3D668F |
| RGB | rgb(61, 102, 143) |
| HSL | hsl(210, 40%, 40%) |
| OKLCH | oklch(49.9% 0.081 249.7) |
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 #3D668F | 6.00:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #3D668F | 3.49:1 | AA large text | Lc 24.2 | Dividers and decoration only |
| #3D668F text on white | 6.00:1 | AA | Lc 79.9 | Fine for body text |
| #3D668F text on black | 3.49:1 | AA large text | Lc -21.9 | 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
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AEC3D9
oklch(80.8% 0.039 249.5)
-
Step 400
400
#83A4C7
oklch(70.7% 0.063 250.2)
-
Step 500
500
#638DB8
oklch(63% 0.08 249.8)
-
Step 600
600
#4A77A4
oklch(55.6% 0.086 249.6)
-
Step 700
700 (this color)
#3D668F
oklch(49.9% 0.081 249.7)
-
Step 800
800
#315272
oklch(42.8% 0.066 248.9)
-
Step 900
900
#2B445C
oklch(37.7% 0.052 248.4)
-
Step 950
950
#1A2836
oklch(27.1% 0.032 249.1)
#3D668F 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) | #556891 | 0.031 |
| Deuteranopia (no green cones) | #4A5F8E | 0.024 |
| Tritanopia (no blue cones) | #007074 | 0.071 |
| Achromatopsia (no color) | #636363 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D668F
#3D668F
oklch(49.9% 0.081 249.7)
- #805A2B
#805A2B
oklch(49.8% 0.08 69.9)
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 #3D668F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.010
- Dusky Blue #475F94 ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.035
- Peacock Blue #016795 ΔE 0.035
- Muted Blue #3B719F ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.041
- Ocean Blue #03719C ΔE 0.041
- YInMn Blue #415A77 ΔE 0.046
Use #3D668F 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.