#678DFE
Closest named color: Soft Blue (#6488EA). oklch(67% 0.172 267.6), rgb(103, 141, 254).
Aa
Black text reads best on this color (6.81:1).
About this color
#678DFE is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.172 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.031 away. Black text reads best on it, at 6.81:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.172) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.81:1 |
| White text | 3.08:1 |
Values
| HEX | #678DFE |
| RGB | rgb(103, 141, 254) |
| HSL | hsl(225, 99%, 70%) |
| OKLCH | oklch(67% 0.172 267.6) |
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 #678DFE | 3.08:1 | AA large text | Lc -62.8 | Content text, not long reading |
| Black text on #678DFE | 6.81:1 | AA | Lc 46.6 | Large or bold text, headings |
| #678DFE text on white | 3.08:1 | AA large text | Lc 57.5 | Large or bold text, headings |
| #678DFE text on black | 6.81:1 | AA | Lc -44.3 | 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 400.
-
Step 50
50
#F1F5FF
oklch(97% 0.014 268.5)
-
Step 100
100
#E1EAFF
oklch(93.7% 0.03 267.2)
-
Step 200
200
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A6BFFF
oklch(80.9% 0.095 267.8)
-
Step 400
400 (this color)
#678DFE
oklch(67% 0.172 267.6)
-
Step 500
500
#567DFF
oklch(63% 0.198 267.8)
-
Step 600
600
#395DFC
oklch(55.6% 0.239 267.6)
-
Step 700
700
#2D4BDC
oklch(49.2% 0.222 267.6)
-
Step 800
800
#253FB2
oklch(42.8% 0.184 267.6)
-
Step 900
900
#21378C
oklch(37.6% 0.144 267.7)
-
Step 950
950
#132152
oklch(26.9% 0.091 267.7)
#678DFE 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) | #589AFF | 0.034 |
| Deuteranopia (no green cones) | #418CFC | 0.036 |
| Tritanopia (no blue cones) | #00A6B9 | 0.149 |
| Achromatopsia (no color) | #939393 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678DFE
#678DFE
oklch(67% 0.172 267.6)
- #B98F00
#B98F00
oklch(67.1% 0.137 87.6)
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 #678DFE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.031
- Cornflower Blue #6495ED ΔE 0.036
- Chefchaouen Blue #4895EF ΔE 0.043
- Lavender Blue #8B88F8 ΔE 0.045
- Cornflower #6A79F7 ΔE 0.049
- Dodger Blue #1E90FF ΔE 0.052
- Periwinkle #8E82FE ΔE 0.053
- Dark Sky Blue #448EE4 ΔE 0.053
Use #678DFE 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.