#678ADA
Closest named color: Soft Blue (#6488EA). oklch(64.3% 0.127 265.1), rgb(103, 138, 218).
Aa
Black text reads best on this color (6.22:1).
About this color
#678ADA is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.127 and its hue 265°. 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 6.22:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.127) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.22:1 |
| White text | 3.37:1 |
Values
| HEX | #678ADA |
| RGB | rgb(103, 138, 218) |
| HSL | hsl(222, 61%, 63%) |
| OKLCH | oklch(64.3% 0.127 265.1) |
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 #678ADA | 3.37:1 | AA large text | Lc -66.5 | Content text, not long reading |
| Black text on #678ADA | 6.22:1 | AA | Lc 43.0 | Non-text elements, placeholder text |
| #678ADA text on white | 3.37:1 | AA large text | Lc 61.1 | Content text, not long reading |
| #678ADA text on black | 6.22:1 | AA | Lc -40.6 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#ADC1EA
oklch(81% 0.062 264.6)
-
Step 400
400
#829FDF
oklch(70.6% 0.1 265.2)
-
Step 500
500 (this color)
#678ADA
oklch(64.3% 0.127 265.1)
-
Step 600
600
#4B6FC3
oklch(55.6% 0.137 264.8)
-
Step 700
700
#3C5CA9
oklch(49.1% 0.129 265)
-
Step 800
800
#324C89
oklch(42.8% 0.106 264.9)
-
Step 900
900
#2C3F6D
oklch(37.6% 0.083 265.7)
-
Step 950
950
#1A2540
oklch(26.9% 0.053 266.2)
#678ADA 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) | #6A91DD | 0.019 |
| Deuteranopia (no green cones) | #5D87D8 | 0.015 |
| Tritanopia (no blue cones) | #2C9BA8 | 0.113 |
| Achromatopsia (no color) | #8C8C8C | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678ADA
#678ADA
oklch(64.3% 0.127 265.1)
- #B08614
#B08614
oklch(64.3% 0.127 85.3)
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 #678ADA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.026
- Dark Sky Blue #448EE4 ΔE 0.035
- Cornflower Blue #6495ED ΔE 0.036
- Chefchaouen Blue #4895EF ΔE 0.044
- Faded Blue #658CBB ΔE 0.050
- Perrywinkle #8F8CE7 ΔE 0.057
- Cool Blue #4984B8 ΔE 0.064
- Cornflower #6A79F7 ΔE 0.067
Use #678ADA 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.