#6685FF
Closest named color: Cornflower (#6A79F7). oklch(65.4% 0.184 270), rgb(102, 133, 255).
Aa
Black text reads best on this color (6.36:1).
About this color
#6685FF is a medium-light, vivid blue. In OKLCH its lightness is 65%, its chroma 0.184 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.030 away. Black text reads best on it, at 6.36:1.
| Hue family | Blues |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.184) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 6.36:1 |
| White text | 3.29:1 |
Values
| HEX | #6685FF |
| RGB | rgb(102, 133, 255) |
| HSL | hsl(228, 100%, 70%) |
| OKLCH | oklch(65.4% 0.184 270) |
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 #6685FF | 3.29:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #6685FF | 6.36:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #6685FF text on white | 3.29:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #6685FF text on black | 6.36:1 | AA | Lc -41.6 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3EAFC
oklch(93.7% 0.025 268.8)
-
Step 200
200
#CCD8FB
oklch(88.4% 0.05 270.4)
-
Step 300
300
#AABEFB
oklch(80.8% 0.089 270.3)
-
Step 400
400
#7E9AFA
oklch(70.7% 0.144 270.1)
-
Step 500
500 (this color)
#6685FF
oklch(65.4% 0.184 270)
-
Step 600
600
#4963E6
oklch(55.6% 0.2 270.1)
-
Step 700
700
#3B51C8
oklch(49.1% 0.186 270.1)
-
Step 800
800
#3043A1
oklch(42.6% 0.153 270)
-
Step 900
900
#2A3A80
oklch(37.7% 0.119 270.1)
-
Step 950
950
#18234B
oklch(27.1% 0.075 269.3)
#6685FF 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) | #4795FF | 0.046 |
| Deuteranopia (no green cones) | #2A87FC | 0.050 |
| Tritanopia (no blue cones) | #00A1B6 | 0.158 |
| Achromatopsia (no color) | #8D8D8D | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6685FF
#6685FF
oklch(65.4% 0.184 270)
- #B08B00
#B08B00
oklch(65.3% 0.133 89.7)
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 #6685FF, closest first.
No curated palette has a color within ΔE 0.04 of #6685FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.030
- Soft Blue #6488EA ΔE 0.034
- Lavender Blue #8B88F8 ΔE 0.050
- Periwinkle #8E82FE ΔE 0.052
- Cornflower Blue #6495ED ΔE 0.053
- Dodger Blue #1E90FF ΔE 0.055
- Chefchaouen Blue #4895EF ΔE 0.056
- Dark Sky Blue #448EE4 ΔE 0.059
Use #6685FF 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.