#678FF8
Closest named color: Cornflower Blue (#6495ED). oklch(67% 0.162 266.4), rgb(103, 143, 248).
Aa
Black text reads best on this color (6.86:1).
About this color
#678FF8 is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.162 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.025 away. Black text reads best on it, at 6.86:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.162) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.86:1 |
| White text | 3.06:1 |
Values
| HEX | #678FF8 |
| RGB | rgb(103, 143, 248) |
| HSL | hsl(223, 91%, 69%) |
| OKLCH | oklch(67% 0.162 266.4) |
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 #678FF8 | 3.06:1 | AA large text | Lc -62.6 | Content text, not long reading |
| Black text on #678FF8 | 6.86:1 | AA | Lc 46.8 | Large or bold text, headings |
| #678FF8 text on white | 3.06:1 | AA large text | Lc 57.2 | Large or bold text, headings |
| #678FF8 text on black | 6.86:1 | AA | Lc -44.5 | 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
#E1EAFE
oklch(93.6% 0.029 266.4)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A4BFFF
oklch(80.8% 0.096 266.6)
-
Step 400
400 (this color)
#678FF8
oklch(67% 0.162 266.4)
-
Step 500
500
#527EFF
oklch(63% 0.198 266.5)
-
Step 600
600
#3761F4
oklch(55.6% 0.225 266.5)
-
Step 700
700
#2A4FD5
oklch(49.1% 0.209 266.4)
-
Step 800
800
#2342AC
oklch(42.7% 0.173 266.3)
-
Step 900
900
#203988
oklch(37.6% 0.136 266.5)
-
Step 950
950
#132250
oklch(26.9% 0.087 266.8)
#678FF8 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) | #609AFC | 0.028 |
| Deuteranopia (no green cones) | #4C8DF6 | 0.028 |
| Tritanopia (no blue cones) | #00A6B7 | 0.142 |
| Achromatopsia (no color) | #939393 | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678FF8
#678FF8
oklch(67% 0.162 266.4)
- #BA8E00
#BA8E00
oklch(67% 0.137 86.5)
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 #678FF8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.025
- Soft Blue #6488EA ΔE 0.026
- Chefchaouen Blue #4895EF ΔE 0.035
- Lavender Blue #8B88F8 ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.047
- Dodger Blue #1E90FF ΔE 0.052
- Perrywinkle #8F8CE7 ΔE 0.054
- Cornflower #6A79F7 ΔE 0.054
Use #678FF8 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.