#647DEB
Closest named color: Cornflower (#6A79F7). oklch(62.5% 0.167 271.2), rgb(100, 125, 235).
Aa
Black text reads best on this color (5.67:1).
About this color
#647DEB is a medium-light, vivid blue. In OKLCH its lightness is 62%, its chroma 0.167 and its hue 271°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.023 away. Black text reads best on it, at 5.67:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.67:1 |
| White text | 3.70:1 |
Values
| HEX | #647DEB |
| RGB | rgb(100, 125, 235) |
| HSL | hsl(229, 77%, 66%) |
| OKLCH | oklch(62.5% 0.167 271.2) |
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 #647DEB | 3.70:1 | AA large text | Lc -69.8 | Content text, not long reading |
| Black text on #647DEB | 5.67:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #647DEB text on white | 3.70:1 | AA large text | Lc 64.3 | Content text, not long reading |
| #647DEB text on black | 5.67:1 | AA | Lc -37.3 | 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
#CED8F8
oklch(88.5% 0.045 271.7)
-
Step 300
300
#ADBEF6
oklch(80.8% 0.082 271.4)
-
Step 400
400
#839BF2
oklch(70.8% 0.13 271.1)
-
Step 500
500 (this color)
#647DEB
oklch(62.5% 0.167 271.2)
-
Step 600
600
#4F65DC
oklch(55.6% 0.182 271.3)
-
Step 700
700
#4053BF
oklch(49% 0.17 271.2)
-
Step 800
800
#35459A
oklch(42.7% 0.139 271.3)
-
Step 900
900
#2D3B7B
oklch(37.7% 0.11 271)
-
Step 950
950
#1A2348
oklch(27% 0.07 270.8)
#647DEB 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) | #488BEF | 0.041 |
| Deuteranopia (no green cones) | #347FE9 | 0.045 |
| Tritanopia (no blue cones) | #0096A9 | 0.148 |
| Achromatopsia (no color) | #858585 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #647DEB
#647DEB
oklch(62.5% 0.167 271.2)
- #A48300
#A48300
oklch(62.3% 0.127 90.9)
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 #647DEB, closest first.
No curated palette has a color within ΔE 0.04 of #647DEB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.023
- Soft Blue #6488EA ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.053
- Medium Slate Blue #7B68EE ΔE 0.056
- Clear Blue #247AFD ΔE 0.062
- Cornflower Blue #6495ED ΔE 0.062
- Chefchaouen Blue #4895EF ΔE 0.063
- Lavender Blue #8B88F8 ΔE 0.064
Use #647DEB 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.