#3D648B
Closest named color: Denim (#3B638C). oklch(49.2% 0.077 249.6), rgb(61, 100, 139).
Aa
White text reads best on this color (6.18:1).
About this color
#3D648B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.077 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.005 away. White text reads best on it, at 6.18:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.077) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #3D648B |
| RGB | rgb(61, 100, 139) |
| HSL | hsl(210, 39%, 39%) |
| OKLCH | oklch(49.2% 0.077 249.6) |
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 #3D648B | 6.18:1 | AA | Lc -85.9 | Fine for body text |
| Black text on #3D648B | 3.39:1 | AA large text | Lc 23.3 | Dividers and decoration only |
| #3D648B text on white | 6.18:1 | AA | Lc 80.7 | Fine for body text |
| #3D648B text on black | 3.39:1 | AA large text | Lc -21.1 | 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
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AFC3D8
oklch(80.9% 0.037 249.6)
-
Step 400
400
#84A4C5
oklch(70.7% 0.06 249.5)
-
Step 500
500
#658DB6
oklch(63% 0.076 249.7)
-
Step 600
600
#4C77A2
oklch(55.6% 0.083 249.5)
-
Step 700
700 (this color)
#3D648B
oklch(49.2% 0.077 249.6)
-
Step 800
800
#335271
oklch(42.9% 0.064 249.5)
-
Step 900
900
#2D445B
oklch(37.8% 0.049 249.2)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#3D648B 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) | #54658D | 0.029 |
| Deuteranopia (no green cones) | #4A5E8A | 0.022 |
| Tritanopia (no blue cones) | #096D72 | 0.066 |
| Achromatopsia (no color) | #616161 | 0.077 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D648B
#3D648B
oklch(49.2% 0.077 249.6)
- #7D592C
#7D592C
oklch(49.3% 0.077 70.4)
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 #3D648B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.005
- Dusky Blue #475F94 ΔE 0.026
- Denim Blue #3B5B92 ΔE 0.032
- Light Navy Blue #2E5A88 ΔE 0.036
- Peacock Blue #016795 ΔE 0.036
- YInMn Blue #415A77 ΔE 0.038
- Muted Blue #3B719F ΔE 0.044
- Slate #516572 ΔE 0.047
Use #3D648B 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.