#678EF1
Closest named color: Soft Blue (#6488EA). oklch(66.4% 0.154 266.1), rgb(103, 142, 241).
Aa
Black text reads best on this color (6.71:1).
About this color
#678EF1 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.154 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.018 away. Black text reads best on it, at 6.71:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.71:1 |
| White text | 3.12:1 |
Values
| HEX | #678EF1 |
| RGB | rgb(103, 142, 241) |
| HSL | hsl(223, 83%, 67%) |
| OKLCH | oklch(66.4% 0.154 266.1) |
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 #678EF1 | 3.12:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #678EF1 | 6.71:1 | AA | Lc 46.0 | Large or bold text, headings |
| #678EF1 text on white | 3.12:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #678EF1 text on black | 6.71:1 | AA | Lc -43.6 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F6
oklch(88.5% 0.042 266.3)
-
Step 300
300
#AAC0F2
oklch(80.9% 0.075 266.2)
-
Step 400
400
#7D9EEC
oklch(70.7% 0.121 265.9)
-
Step 500
500 (this color)
#678EF1
oklch(66.4% 0.154 266.1)
-
Step 600
600
#456BD4
oklch(55.6% 0.167 266.1)
-
Step 700
700
#3759B8
oklch(49.2% 0.155 266)
-
Step 800
800
#2E4994
oklch(42.7% 0.128 266.2)
-
Step 900
900
#283E76
oklch(37.7% 0.1 265.7)
-
Step 950
950
#182545
oklch(27.1% 0.062 265.8)
#678EF1 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) | #6398F5 | 0.025 |
| Deuteranopia (no green cones) | #518CEF | 0.024 |
| Tritanopia (no blue cones) | #00A4B4 | 0.136 |
| Achromatopsia (no color) | #929292 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #678EF1
#678EF1
oklch(66.4% 0.154 266.1)
- #B88C00
#B88C00
oklch(66.4% 0.136 86.2)
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 #678EF1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.018
- Cornflower Blue #6495ED ΔE 0.020
- Chefchaouen Blue #4895EF ΔE 0.032
- Dark Sky Blue #448EE4 ΔE 0.040
- Lavender Blue #8B88F8 ΔE 0.048
- Perrywinkle #8F8CE7 ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.054
- Cornflower #6A79F7 ΔE 0.055
Use #678EF1 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.