#678FFC
Closest named color: Cornflower Blue (#6495ED). oklch(67.3% 0.167 266.8), rgb(103, 143, 252).
Aa
Black text reads best on this color (6.91:1).
About this color
#678FFC is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.167 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.030 away. Black text reads best on it, at 6.91:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.167) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.91:1 |
| White text | 3.03:1 |
Values
| HEX | #678FFC |
| RGB | rgb(103, 143, 252) |
| HSL | hsl(224, 96%, 70%) |
| OKLCH | oklch(67.3% 0.167 266.8) |
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 #678FFC | 3.03:1 | AA large text | Lc -62.3 | Content text, not long reading |
| Black text on #678FFC | 6.91:1 | AA | Lc 47.1 | Large or bold text, headings |
| #678FFC text on white | 3.03:1 | AA large text | Lc 56.9 | Large or bold text, headings |
| #678FFC text on black | 6.91:1 | AA | Lc -44.8 | 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
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400 (this color)
#678FFC
oklch(67.3% 0.167 266.8)
-
Step 500
500
#537EFF
oklch(63.1% 0.197 266.8)
-
Step 600
600
#365FF8
oklch(55.5% 0.232 266.7)
-
Step 700
700
#2A4DD8
oklch(49% 0.216 266.7)
-
Step 800
800
#2340AF
oklch(42.6% 0.18 266.8)
-
Step 900
900
#20398A
oklch(37.8% 0.138 266.6)
-
Step 950
950
#132251
oklch(27% 0.088 267)
#678FFC 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) | #5D9BFF | 0.030 |
| Deuteranopia (no green cones) | #488EFA | 0.030 |
| Tritanopia (no blue cones) | #00A7B9 | 0.145 |
| Achromatopsia (no color) | #949494 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678FFC
#678FFC
oklch(67.3% 0.167 266.8)
- #BB8F00
#BB8F00
oklch(67.3% 0.138 86.6)
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 #678FFC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.030
- Soft Blue #6488EA ΔE 0.031
- Chefchaouen Blue #4895EF ΔE 0.039
- Lavender Blue #8B88F8 ΔE 0.046
- Dark Sky Blue #448EE4 ΔE 0.051
- Dodger Blue #1E90FF ΔE 0.052
- Cornflower #6A79F7 ΔE 0.054
- Periwinkle #8E82FE ΔE 0.056
Use #678FFC 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.