#688DF5
Closest named color: Soft Blue (#6488EA). oklch(66.5% 0.16 267.3), rgb(104, 141, 245).
Aa
Black text reads best on this color (6.71:1).
About this color
#688DF5 is a medium-light, vivid blue. In OKLCH its lightness is 66%, its chroma 0.160 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.020 away. Black text reads best on it, at 6.71:1.
| Hue family | Blues |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.71:1 |
| White text | 3.12:1 |
Values
| HEX | #688DF5 |
| RGB | rgb(104, 141, 245) |
| HSL | hsl(224, 88%, 68%) |
| OKLCH | oklch(66.5% 0.16 267.3) |
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 #688DF5 | 3.12:1 | AA large text | Lc -63.5 | Content text, not long reading |
| Black text on #688DF5 | 6.71:1 | AA | Lc 46.0 | Large or bold text, headings |
| #688DF5 text on white | 3.12:1 | AA large text | Lc 58.1 | Large or bold text, headings |
| #688DF5 text on black | 6.71:1 | AA | Lc -43.7 | 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
#E3EAFA
oklch(93.6% 0.023 266.9)
-
Step 200
200
#CCD9F7
oklch(88.5% 0.044 266.9)
-
Step 300
300
#AAC0F4
oklch(80.9% 0.078 266.8)
-
Step 400
400
#7E9DEF
oklch(70.7% 0.126 267.4)
-
Step 500
500 (this color)
#688DF5
oklch(66.5% 0.16 267.3)
-
Step 600
600
#4669D8
oklch(55.6% 0.175 267.3)
-
Step 700
700
#3857BB
oklch(49.1% 0.162 267.2)
-
Step 800
800
#2E4897
oklch(42.7% 0.133 266.9)
-
Step 900
900
#293D78
oklch(37.7% 0.104 267.2)
-
Step 950
950
#182446
oklch(26.9% 0.065 267.3)
#688DF5 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) | #5F98F9 | 0.028 |
| Deuteranopia (no green cones) | #4C8CF3 | 0.029 |
| Tritanopia (no blue cones) | #00A4B5 | 0.142 |
| Achromatopsia (no color) | #929292 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688DF5
#688DF5
oklch(66.5% 0.16 267.3)
- #B78D00
#B78D00
oklch(66.5% 0.136 87.4)
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 #688DF5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.020
- Cornflower Blue #6495ED ΔE 0.026
- Chefchaouen Blue #4895EF ΔE 0.036
- Dark Sky Blue #448EE4 ΔE 0.045
- Lavender Blue #8B88F8 ΔE 0.045
- Cornflower #6A79F7 ΔE 0.050
- Perrywinkle #8F8CE7 ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.054
Use #688DF5 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.