#648ED8
Closest named color: Cornflower Blue (#6495ED). oklch(64.8% 0.121 261.1), rgb(100, 142, 216).
Aa
Black text reads best on this color (6.40:1).
About this color
#648ED8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 65%, its chroma 0.121 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.033 away. Black text reads best on it, at 6.40:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.40:1 |
| White text | 3.27:1 |
Values
| HEX | #648ED8 |
| RGB | rgb(100, 142, 216) |
| HSL | hsl(218, 60%, 62%) |
| OKLCH | oklch(64.8% 0.121 261.1) |
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 #648ED8 | 3.27:1 | AA large text | Lc -65.4 | Content text, not long reading |
| Black text on #648ED8 | 6.40:1 | AA | Lc 44.1 | Non-text elements, placeholder text |
| #648ED8 text on white | 3.27:1 | AA large text | Lc 60.0 | Large or bold text, headings |
| #648ED8 text on black | 6.40:1 | AA | Lc -41.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CDDAEF
oklch(88.5% 0.032 260)
-
Step 300
300
#ABC2E8
oklch(81% 0.06 260.4)
-
Step 400
400
#7FA1DC
oklch(70.7% 0.095 261.1)
-
Step 500
500 (this color)
#648ED8
oklch(64.8% 0.121 261.1)
-
Step 600
600
#4571BF
oklch(55.5% 0.131 261)
-
Step 700
700
#375EA5
oklch(49% 0.122 261.4)
-
Step 800
800
#2E4D86
oklch(42.6% 0.102 261.6)
-
Step 900
900
#29416B
oklch(37.7% 0.078 260.9)
-
Step 950
950
#18263F
oklch(27% 0.051 261.4)
#648ED8 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) | #7094DB | 0.023 |
| Deuteranopia (no green cones) | #6289D6 | 0.014 |
| Tritanopia (no blue cones) | #239EA9 | 0.108 |
| Achromatopsia (no color) | #8E8E8E | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #648ED8
#648ED8
oklch(64.8% 0.121 261.1)
- #B48626
#B48626
oklch(64.9% 0.121 81.2)
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 #648ED8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.033
- Dark Sky Blue #448EE4 ΔE 0.034
- Soft Blue #6488EA ΔE 0.034
- Chefchaouen Blue #4895EF ΔE 0.041
- Faded Blue #658CBB ΔE 0.043
- Perrywinkle #8F8CE7 ΔE 0.061
- Cool Blue #4984B8 ΔE 0.062
- Dusty Blue #5A86AD ΔE 0.067
Use #648ED8 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.