#688FFD
Closest named color: Cornflower Blue (#6495ED). oklch(67.4% 0.168 267.1), rgb(104, 143, 253).
Aa
Black text reads best on this color (6.93:1).
About this color
#688FFD is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.168 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.031 away. Black text reads best on it, at 6.93:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.168) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.93:1 |
| White text | 3.02:1 |
Values
| HEX | #688FFD |
| RGB | rgb(104, 143, 253) |
| HSL | hsl(224, 97%, 70%) |
| OKLCH | oklch(67.4% 0.168 267.1) |
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 #688FFD | 3.02:1 | AA large text | Lc -62.2 | Content text, not long reading |
| Black text on #688FFD | 6.93:1 | AA | Lc 47.3 | Large or bold text, headings |
| #688FFD text on white | 3.02:1 | AA large text | Lc 56.8 | Large or bold text, headings |
| #688FFD text on black | 6.93:1 | AA | Lc -45.0 | 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
#C9D9FF
oklch(88.6% 0.055 267.2)
-
Step 300
300
#A5BFFF
oklch(80.9% 0.095 267.2)
-
Step 400
400 (this color)
#688FFD
oklch(67.4% 0.168 267.1)
-
Step 500
500
#547EFF
oklch(63.1% 0.197 267)
-
Step 600
600
#385FF9
oklch(55.7% 0.233 267.1)
-
Step 700
700
#2C4CD9
oklch(49% 0.217 267.3)
-
Step 800
800
#2440AF
oklch(42.7% 0.179 267.1)
-
Step 900
900
#21388B
oklch(37.7% 0.141 267.3)
-
Step 950
950
#132251
oklch(27% 0.088 267)
#688FFD 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 | 0.031 |
| Deuteranopia (no green cones) | #478EFB | 0.032 |
| Tritanopia (no blue cones) | #00A8BA | 0.147 |
| Achromatopsia (no color) | #949494 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688FFD
#688FFD
oklch(67.4% 0.168 267.1)
- #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 #688FFD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.031
- Soft Blue #6488EA ΔE 0.032
- Chefchaouen Blue #4895EF ΔE 0.040
- Lavender Blue #8B88F8 ΔE 0.045
- Dark Sky Blue #448EE4 ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.053
- Cornflower #6A79F7 ΔE 0.054
- Periwinkle #8E82FE ΔE 0.054
Use #688FFD 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.