#648BE0
Closest named color: Soft Blue (#6488EA). oklch(64.6% 0.135 264.3), rgb(100, 139, 224).
Aa
Black text reads best on this color (6.31:1).
About this color
#648BE0 is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.135 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 6.31:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.31:1 |
| White text | 3.32:1 |
Values
| HEX | #648BE0 |
| RGB | rgb(100, 139, 224) |
| HSL | hsl(221, 67%, 64%) |
| OKLCH | oklch(64.6% 0.135 264.3) |
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 #648BE0 | 3.32:1 | AA large text | Lc -66.0 | Content text, not long reading |
| Black text on #648BE0 | 6.31:1 | AA | Lc 43.6 | Non-text elements, placeholder text |
| #648BE0 text on white | 3.32:1 | AA large text | Lc 60.5 | Content text, not long reading |
| #648BE0 text on black | 6.31:1 | AA | Lc -41.2 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CDD9F2
oklch(88.4% 0.037 265.1)
-
Step 300
300
#ABC1EC
oklch(80.9% 0.066 263.7)
-
Step 400
400
#7F9FE3
oklch(70.6% 0.106 264.5)
-
Step 500
500 (this color)
#648BE0
oklch(64.6% 0.135 264.3)
-
Step 600
600
#476EC8
oklch(55.5% 0.146 264.5)
-
Step 700
700
#385CAD
oklch(49.1% 0.136 264)
-
Step 800
800
#2F4B8C
oklch(42.6% 0.113 264.6)
-
Step 900
900
#293F70
oklch(37.6% 0.089 264.3)
-
Step 950
950
#182542
oklch(26.9% 0.057 264.6)
#648BE0 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) | #6893E3 | 0.022 |
| Deuteranopia (no green cones) | #5988DE | 0.016 |
| Tritanopia (no blue cones) | #149EAB | 0.121 |
| Achromatopsia (no color) | #8D8D8D | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648BE0
#648BE0
oklch(64.6% 0.135 264.3)
- #B48600
#B48600
oklch(64.7% 0.133 84.2)
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 #648BE0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.018
- Dark Sky Blue #448EE4 ΔE 0.030
- Cornflower Blue #6495ED ΔE 0.030
- Chefchaouen Blue #4895EF ΔE 0.037
- Perrywinkle #8F8CE7 ΔE 0.057
- Faded Blue #658CBB ΔE 0.057
- Cornflower #6A79F7 ΔE 0.062
- Lavender Blue #8B88F8 ΔE 0.063
Use #648BE0 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.