#688AEB
Closest named color: Soft Blue (#6488EA). oklch(65.3% 0.15 267.6), rgb(104, 138, 235).
Aa
Black text reads best on this color (6.42:1).
About this color
#688AEB is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.150 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.008 away. Black text reads best on it, at 6.42:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.150) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.42:1 |
| White text | 3.26:1 |
Values
| HEX | #688AEB |
| RGB | rgb(104, 138, 235) |
| HSL | hsl(224, 77%, 66%) |
| OKLCH | oklch(65.3% 0.15 267.6) |
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 #688AEB | 3.26:1 | AA large text | Lc -65.3 | Content text, not long reading |
| Black text on #688AEB | 6.42:1 | AA | Lc 44.2 | Non-text elements, placeholder text |
| #688AEB text on white | 3.26:1 | AA large text | Lc 59.8 | Large or bold text, headings |
| #688AEB text on black | 6.42:1 | AA | Lc -41.9 | 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
#E4EAF9
oklch(93.7% 0.021 268.4)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ACC0F1
oklch(81% 0.073 267.4)
-
Step 400
400
#819DEA
oklch(70.6% 0.118 268.1)
-
Step 500
500 (this color)
#688AEB
oklch(65.3% 0.15 267.6)
-
Step 600
600
#4A6BD1
oklch(55.7% 0.162 267.5)
-
Step 700
700
#3B58B5
oklch(49% 0.151 267.5)
-
Step 800
800
#314993
oklch(42.8% 0.125 267.4)
-
Step 900
900
#2B3D75
oklch(37.6% 0.098 268)
-
Step 950
950
#192445
oklch(26.9% 0.063 268.1)
#688AEB 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) | #6194EF | 0.026 |
| Deuteranopia (no green cones) | #5089E9 | 0.026 |
| Tritanopia (no blue cones) | #119FAF | 0.134 |
| Achromatopsia (no color) | #8E8E8E | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #688AEB
#688AEB
oklch(65.3% 0.15 267.6)
- #B28A00
#B28A00
oklch(65.3% 0.134 88)
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 #688AEB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.008
- Cornflower Blue #6495ED ΔE 0.028
- Dark Sky Blue #448EE4 ΔE 0.038
- Chefchaouen Blue #4895EF ΔE 0.038
- Cornflower #6A79F7 ΔE 0.049
- Lavender Blue #8B88F8 ΔE 0.050
- Perrywinkle #8F8CE7 ΔE 0.052
- Dodger Blue #1E90FF ΔE 0.058
Use #688AEB 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.