#647ED7
Closest named color: Soft Blue (#6488EA). oklch(61.4% 0.138 269.7), rgb(100, 126, 215).
Aa
Black text reads best on this color (5.50:1).
About this color
#647ED7 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 61%, its chroma 0.138 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.035 away. Black text reads best on it, at 5.50:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.138) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.50:1 |
| White text | 3.81:1 |
Values
| HEX | #647ED7 |
| RGB | rgb(100, 126, 215) |
| HSL | hsl(226, 59%, 62%) |
| OKLCH | oklch(61.4% 0.138 269.7) |
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 #647ED7 | 3.81:1 | AA large text | Lc -71.0 | Content text, not long reading |
| Black text on #647ED7 | 5.50:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #647ED7 text on white | 3.81:1 | AA large text | Lc 65.5 | Content text, not long reading |
| #647ED7 text on black | 5.50:1 | AA | Lc -36.2 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CFD9F3
oklch(88.6% 0.037 268.9)
-
Step 300
300
#AFBFED
oklch(80.8% 0.068 269.9)
-
Step 400
400
#869DE4
oklch(70.7% 0.108 269.8)
-
Step 500
500 (this color)
#647ED7
oklch(61.4% 0.138 269.7)
-
Step 600
600
#516BCA
oklch(55.6% 0.15 269.5)
-
Step 700
700
#4259AF
oklch(49.2% 0.139 269.5)
-
Step 800
800
#36498E
oklch(42.7% 0.116 269.4)
-
Step 900
900
#2F3E71
oklch(37.8% 0.089 269.4)
-
Step 950
950
#1B2442
oklch(26.9% 0.057 269.6)
#647ED7 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) | #5988DA | 0.027 |
| Deuteranopia (no green cones) | #4C7ED5 | 0.027 |
| Tritanopia (no blue cones) | #2991A0 | 0.123 |
| Achromatopsia (no color) | #838383 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647ED7
#647ED7
oklch(61.4% 0.138 269.7)
- #A28000
#A28000
oklch(61.5% 0.126 89.9)
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 #647ED7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.035
- Dark Sky Blue #448EE4 ΔE 0.048
- Cornflower #6A79F7 ΔE 0.052
- Cool Blue #4984B8 ΔE 0.062
- Windows Blue #3778BF ΔE 0.064
- Cornflower Blue #6495ED ΔE 0.064
- Faded Blue #658CBB ΔE 0.064
- Chefchaouen Blue #4895EF ΔE 0.065
Use #647ED7 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.