#647EE9
Closest named color: Soft Blue (#6488EA). oklch(62.5% 0.163 270.8), rgb(100, 126, 233).
Aa
Black text reads best on this color (5.70:1).
About this color
#647EE9 is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.163 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 5.70:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 5.70:1 |
| White text | 3.68:1 |
Values
| HEX | #647EE9 |
| RGB | rgb(100, 126, 233) |
| HSL | hsl(228, 75%, 65%) |
| OKLCH | oklch(62.5% 0.163 270.8) |
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 #647EE9 | 3.68:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #647EE9 | 5.70:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #647EE9 text on white | 3.68:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #647EE9 text on black | 5.70:1 | AA | Lc -37.5 | 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
#E4E9FA
oklch(93.5% 0.024 272.8)
-
Step 200
200
#CED8F7
oklch(88.4% 0.044 271.3)
-
Step 300
300
#ADBFF5
oklch(81% 0.079 270.3)
-
Step 400
400
#839BF0
oklch(70.7% 0.128 270.9)
-
Step 500
500 (this color)
#647EE9
oklch(62.5% 0.163 270.8)
-
Step 600
600
#4F66D9
oklch(55.5% 0.177 271)
-
Step 700
700
#4054BC
oklch(49% 0.164 270.9)
-
Step 800
800
#354698
oklch(42.8% 0.135 270.8)
-
Step 900
900
#2D3B79
oklch(37.6% 0.107 270.9)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#647EE9 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) | #4C8BED | 0.038 |
| Deuteranopia (no green cones) | #3980E7 | 0.042 |
| Tritanopia (no blue cones) | #0096A8 | 0.146 |
| Achromatopsia (no color) | #858585 | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647EE9
#647EE9
oklch(62.5% 0.163 270.8)
- #A58300
#A58300
oklch(62.4% 0.128 90.3)
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 #647EE9, closest first.
No curated palette has a color within ΔE 0.04 of #647EE9.
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 0.027
- Dark Sky Blue #448EE4 ΔE 0.050
- Medium Slate Blue #7B68EE ΔE 0.059
- Cornflower Blue #6495ED ΔE 0.059
- Chefchaouen Blue #4895EF ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.064
- Clear Blue #247AFD ΔE 0.064
Use #647EE9 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.