#3D648F
Closest named color: Denim (#3B638C). oklch(49.4% 0.082 252), rgb(61, 100, 143).
Aa
White text reads best on this color (6.14:1).
About this color
#3D648F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.082 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.006 away. White text reads best on it, at 6.14:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.41:1 |
| White text | 6.14:1 |
Values
| HEX | #3D648F |
| RGB | rgb(61, 100, 143) |
| HSL | hsl(211, 40%, 40%) |
| OKLCH | oklch(49.4% 0.082 252) |
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 #3D648F | 6.14:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #3D648F | 3.41:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #3D648F text on white | 6.14:1 | AA | Lc 80.5 | Fine for body text |
| #3D648F text on black | 3.41:1 | AA large text | Lc -21.3 | 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
#CFDAE8
oklch(88.4% 0.023 254.4)
-
Step 300
300
#AFC3DA
oklch(80.9% 0.039 252)
-
Step 400
400
#84A4C8
oklch(70.8% 0.064 251.7)
-
Step 500
500
#658DBA
oklch(63.2% 0.081 252)
-
Step 600
600
#4B76A6
oklch(55.5% 0.089 252.2)
-
Step 700
700 (this color)
#3D648F
oklch(49.4% 0.082 252)
-
Step 800
800
#325173
oklch(42.7% 0.068 251.8)
-
Step 900
900
#2C435D
oklch(37.6% 0.053 252.2)
-
Step 950
950
#1A2837
oklch(27.1% 0.034 250.8)
#3D648F 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) | #526691 | 0.027 |
| Deuteranopia (no green cones) | #485E8E | 0.020 |
| Tritanopia (no blue cones) | #006E73 | 0.072 |
| Achromatopsia (no color) | #626262 | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3D648F
#3D648F
oklch(49.4% 0.082 252)
- #7E5927
#7E5927
oklch(49.3% 0.082 71.9)
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 #3D648F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.006
- Dusky Blue #475F94 ΔE 0.021
- Denim Blue #3B5B92 ΔE 0.029
- Peacock Blue #016795 ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.036
- Muted Blue #3B719F ΔE 0.041
- YInMn Blue #415A77 ΔE 0.043
- Ocean Blue #03719C ΔE 0.045
Use #3D648F 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.