#647EE4
Closest named color: Soft Blue (#6488EA). oklch(62.2% 0.156 270.6), rgb(100, 126, 228).
Aa
Black text reads best on this color (5.64:1).
About this color
#647EE4 is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.156 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.026 away. Black text reads best on it, at 5.64:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.156) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.64:1 |
| White text | 3.71:1 |
Values
| HEX | #647EE4 |
| RGB | rgb(100, 126, 228) |
| HSL | hsl(228, 70%, 64%) |
| OKLCH | oklch(62.2% 0.156 270.6) |
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 #647EE4 | 3.71:1 | AA large text | Lc -70.0 | Content text, not long reading |
| Black text on #647EE4 | 5.64:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #647EE4 text on white | 3.71:1 | AA large text | Lc 64.5 | Content text, not long reading |
| #647EE4 text on black | 5.64:1 | AA | Lc -37.1 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E4E9F9
oklch(93.5% 0.022 272.1)
-
Step 200
200
#CED8F6
oklch(88.4% 0.043 270.9)
-
Step 300
300
#AEBFF3
oklch(81% 0.076 270.6)
-
Step 400
400
#849CED
oklch(70.8% 0.122 270.5)
-
Step 500
500 (this color)
#647EE4
oklch(62.2% 0.156 270.6)
-
Step 600
600
#4F68D5
oklch(55.6% 0.169 270.3)
-
Step 700
700
#4156B9
oklch(49.2% 0.158 270.6)
-
Step 800
800
#354795
oklch(42.8% 0.129 270.3)
-
Step 900
900
#2E3C77
oklch(37.7% 0.102 270.8)
-
Step 950
950
#1B2446
oklch(27.1% 0.064 270.5)
#647EE4 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) | #508AE8 | 0.034 |
| Deuteranopia (no green cones) | #3F7FE2 | 0.038 |
| Tritanopia (no blue cones) | #1095A6 | 0.140 |
| Achromatopsia (no color) | #848484 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647EE4
#647EE4
oklch(62.2% 0.156 270.6)
- #A48200
#A48200
oklch(62.1% 0.127 90.2)
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 #647EE4, closest first.
No curated palette has a color within ΔE 0.04 of #647EE4.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.026
- Cornflower #6A79F7 ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.048
- Cornflower Blue #6495ED ΔE 0.060
- Chefchaouen Blue #4895EF ΔE 0.061
- Medium Slate Blue #7B68EE ΔE 0.062
- Lavender Blue #8B88F8 ΔE 0.067
- Clear Blue #247AFD ΔE 0.068
Use #647EE4 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.