#678BF1
Closest named color: Soft Blue (#6488EA). oklch(65.8% 0.157 267.4), rgb(103, 139, 241).
Aa
Black text reads best on this color (6.53:1).
About this color
#678BF1 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.157 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.013 away. Black text reads best on it, at 6.53:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.53:1 |
| White text | 3.21:1 |
Values
| HEX | #678BF1 |
| RGB | rgb(103, 139, 241) |
| HSL | hsl(224, 83%, 67%) |
| OKLCH | oklch(65.8% 0.157 267.4) |
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 #678BF1 | 3.21:1 | AA large text | Lc -64.5 | Content text, not long reading |
| Black text on #678BF1 | 6.53:1 | AA | Lc 44.9 | Non-text elements, placeholder text |
| #678BF1 text on white | 3.21:1 | AA large text | Lc 59.1 | Large or bold text, headings |
| #678BF1 text on black | 6.53:1 | AA | Lc -42.6 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CDD9F6
oklch(88.5% 0.042 267.7)
-
Step 300
300
#ABC0F3
oklch(81% 0.076 267.3)
-
Step 400
400
#7F9DED
oklch(70.7% 0.122 267.6)
-
Step 500
500 (this color)
#678BF1
oklch(65.8% 0.157 267.4)
-
Step 600
600
#476AD6
oklch(55.7% 0.171 267.2)
-
Step 700
700
#3957B9
oklch(49% 0.159 267.4)
-
Step 800
800
#2F4896
oklch(42.7% 0.131 267.3)
-
Step 900
900
#293D77
oklch(37.6% 0.102 267.1)
-
Step 950
950
#182446
oklch(26.9% 0.065 267.3)
#678BF1 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) | #5E96F5 | 0.028 |
| Deuteranopia (no green cones) | #4C8AEF | 0.028 |
| Tritanopia (no blue cones) | #00A2B2 | 0.141 |
| Achromatopsia (no color) | #909090 | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678BF1
#678BF1
oklch(65.8% 0.157 267.4)
- #B48B00
#B48B00
oklch(65.7% 0.134 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 #678BF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.013
- Cornflower Blue #6495ED ΔE 0.028
- Chefchaouen Blue #4895EF ΔE 0.037
- Dark Sky Blue #448EE4 ΔE 0.041
- Cornflower #6A79F7 ΔE 0.047
- Lavender Blue #8B88F8 ΔE 0.047
- Perrywinkle #8F8CE7 ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.054
Use #678BF1 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.