#6683EF
Closest named color: Soft Blue (#6488EA). oklch(64% 0.164 269.9), rgb(102, 131, 239).
Aa
Black text reads best on this color (6.05:1).
About this color
#6683EF is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.164 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.016 away. Black text reads best on it, at 6.05:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.164) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.05:1 |
| White text | 3.46:1 |
Values
| HEX | #6683EF |
| RGB | rgb(102, 131, 239) |
| HSL | hsl(227, 81%, 67%) |
| OKLCH | oklch(64% 0.164 269.9) |
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 #6683EF | 3.46:1 | AA large text | Lc -67.4 | Content text, not long reading |
| Black text on #6683EF | 6.05:1 | AA | Lc 42.1 | Non-text elements, placeholder text |
| #6683EF text on white | 3.46:1 | AA large text | Lc 62.0 | Content text, not long reading |
| #6683EF text on black | 6.05:1 | AA | Lc -39.7 | 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
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CDD8F8
oklch(88.4% 0.046 270.4)
-
Step 300
300
#ACBFF6
oklch(81% 0.081 269.7)
-
Step 400
400
#819CF1
oklch(70.8% 0.128 269.6)
-
Step 500
500 (this color)
#6683EF
oklch(64% 0.164 269.9)
-
Step 600
600
#4C67DA
oklch(55.6% 0.178 269.8)
-
Step 700
700
#3E55BD
oklch(49.2% 0.165 269.9)
-
Step 800
800
#334699
oklch(42.7% 0.137 270)
-
Step 900
900
#2C3C7A
oklch(37.8% 0.107 269.8)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#6683EF 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) | #5190F3 | 0.036 |
| Deuteranopia (no green cones) | #3D84ED | 0.040 |
| Tritanopia (no blue cones) | #009BAD | 0.147 |
| Achromatopsia (no color) | #8A8A8A | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6683EF
#6683EF
oklch(64% 0.164 269.9)
- #AB8700
#AB8700
oklch(63.9% 0.131 89.8)
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 #6683EF, closest first.
No curated palette has a color within ΔE 0.04 of #6683EF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.016
- Cornflower #6A79F7 ΔE 0.029
- Dark Sky Blue #448EE4 ΔE 0.046
- Cornflower Blue #6495ED ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.051
- Lavender Blue #8B88F8 ΔE 0.053
- Periwinkle #8E82FE ΔE 0.058
- Dodger Blue #1E90FF ΔE 0.059
Use #6683EF 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.