#648DE3
Closest named color: Soft Blue (#6488EA). oklch(65.2% 0.137 263.7), rgb(100, 141, 227).
Aa
Black text reads best on this color (6.46:1).
About this color
#648DE3 is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.137 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.018 away. Black text reads best on it, at 6.46:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.46:1 |
| White text | 3.25:1 |
Values
| HEX | #648DE3 |
| RGB | rgb(100, 141, 227) |
| HSL | hsl(221, 69%, 64%) |
| OKLCH | oklch(65.2% 0.137 263.7) |
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 #648DE3 | 3.25:1 | AA large text | Lc -65.0 | Content text, not long reading |
| Black text on #648DE3 | 6.46:1 | AA | Lc 44.4 | Non-text elements, placeholder text |
| #648DE3 text on white | 3.25:1 | AA large text | Lc 59.6 | Large or bold text, headings |
| #648DE3 text on black | 6.46:1 | AA | Lc -42.1 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDDAF3
oklch(88.6% 0.037 263.6)
-
Step 300
300
#ABC1ED
oklch(80.9% 0.067 264.1)
-
Step 400
400
#7EA0E4
oklch(70.8% 0.107 263.5)
-
Step 500
500 (this color)
#648DE3
oklch(65.2% 0.137 263.7)
-
Step 600
600
#456EC9
oklch(55.5% 0.148 264)
-
Step 700
700
#365CAE
oklch(49.1% 0.138 263.5)
-
Step 800
800
#2D4B8D
oklch(42.6% 0.115 263.8)
-
Step 900
900
#283F71
oklch(37.6% 0.091 264)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#648DE3 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) | #6995E6 | 0.023 |
| Deuteranopia (no green cones) | #5989E1 | 0.017 |
| Tritanopia (no blue cones) | #07A0AD | 0.123 |
| Achromatopsia (no color) | #8F8F8F | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648DE3
#648DE3
oklch(65.2% 0.137 263.7)
- #B68700
#B68700
oklch(65.2% 0.134 83.8)
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 #648DE3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.018
- Cornflower Blue #6495ED ΔE 0.024
- Dark Sky Blue #448EE4 ΔE 0.030
- Chefchaouen Blue #4895EF ΔE 0.032
- Perrywinkle #8F8CE7 ΔE 0.055
- Faded Blue #658CBB ΔE 0.061
- Lavender Blue #8B88F8 ΔE 0.061
- Dodger Blue #1E90FF ΔE 0.061
Use #648DE3 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.