#6683EE
Closest named color: Soft Blue (#6488EA). oklch(63.9% 0.163 269.9), rgb(102, 131, 238).
Aa
Black text reads best on this color (6.04:1).
About this color
#6683EE is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.163 and its hue 270°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.015 away. Black text reads best on it, at 6.04:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.163) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.04:1 |
| White text | 3.47:1 |
Values
| HEX | #6683EE |
| RGB | rgb(102, 131, 238) |
| HSL | hsl(227, 80%, 67%) |
| OKLCH | oklch(63.9% 0.163 269.9) |
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 #6683EE | 3.47:1 | AA large text | Lc -67.5 | Content text, not long reading |
| Black text on #6683EE | 6.04:1 | AA | Lc 42.0 | Non-text elements, placeholder text |
| #6683EE text on white | 3.47:1 | AA large text | Lc 62.1 | Content text, not long reading |
| #6683EE text on black | 6.04:1 | AA | Lc -39.6 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E4EAFA
oklch(93.7% 0.023 269.4)
-
Step 200
200
#CDD8F7
oklch(88.4% 0.044 270)
-
Step 300
300
#ACBFF5
oklch(80.9% 0.079 269.5)
-
Step 400
400
#829CF0
oklch(70.8% 0.127 269.9)
-
Step 500
500 (this color)
#6683EE
oklch(63.9% 0.163 269.9)
-
Step 600
600
#4C67D9
oklch(55.6% 0.177 269.8)
-
Step 700
700
#3E55BD
oklch(49.2% 0.165 269.9)
-
Step 800
800
#334699
oklch(42.7% 0.137 270)
-
Step 900
900
#2C3C79
oklch(37.7% 0.105 269.7)
-
Step 950
950
#1A2347
oklch(26.9% 0.068 270.7)
#6683EE 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) | #5290F2 | 0.036 |
| Deuteranopia (no green cones) | #3F84EC | 0.038 |
| Tritanopia (no blue cones) | #009BAD | 0.145 |
| Achromatopsia (no color) | #8A8A8A | 0.163 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6683EE
#6683EE
oklch(63.9% 0.163 269.9)
- #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 #6683EE, closest first.
No curated palette has a color within ΔE 0.04 of #6683EE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.015
- Cornflower #6A79F7 ΔE 0.030
- Dark Sky Blue #448EE4 ΔE 0.045
- Cornflower Blue #6495ED ΔE 0.047
- Chefchaouen Blue #4895EF ΔE 0.051
- Lavender Blue #8B88F8 ΔE 0.054
- Periwinkle #8E82FE ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.059
Use #6683EE 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.