#6684EC
Closest named color: Soft Blue (#6488EA). oklch(64% 0.159 269.4), rgb(102, 132, 236).
Aa
Black text reads best on this color (6.07:1).
About this color
#6684EC is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.159 and its hue 269°. Its hue sits on the cool side of the wheel. The nearest named color is Soft Blue (#6488EA), ΔE 0.011 away. Black text reads best on it, at 6.07:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.159) |
| Temperature | cool |
| Nearest name | Soft Blue (#6488EA) |
| Black text | 6.07:1 |
| White text | 3.45:1 |
Values
| HEX | #6684EC |
| RGB | rgb(102, 132, 236) |
| HSL | hsl(227, 78%, 66%) |
| OKLCH | oklch(64% 0.159 269.4) |
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 #6684EC | 3.45:1 | AA large text | Lc -67.3 | Content text, not long reading |
| Black text on #6684EC | 6.07:1 | AA | Lc 42.2 | Non-text elements, placeholder text |
| #6684EC text on white | 3.45:1 | AA large text | Lc 61.9 | Content text, not long reading |
| #6684EC text on black | 6.07:1 | AA | Lc -39.8 | 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
#CDD9F7
oklch(88.6% 0.043 268.2)
-
Step 300
300
#ACBFF4
oklch(80.9% 0.078 269.3)
-
Step 400
400
#819CEE
oklch(70.6% 0.124 269.2)
-
Step 500
500 (this color)
#6684EC
oklch(64% 0.159 269.4)
-
Step 600
600
#4C68D7
oklch(55.6% 0.173 269.4)
-
Step 700
700
#3D56BA
oklch(49.1% 0.16 269.2)
-
Step 800
800
#334797
oklch(42.8% 0.133 269.5)
-
Step 900
900
#2C3C78
oklch(37.6% 0.104 269.6)
-
Step 950
950
#1A2446
oklch(27.1% 0.065 269.4)
#6684EC 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) | #5590F0 | 0.033 |
| Deuteranopia (no green cones) | #4384EA | 0.035 |
| Tritanopia (no blue cones) | #009BAC | 0.143 |
| Achromatopsia (no color) | #8A8A8A | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6684EC
#6684EC
oklch(64% 0.159 269.4)
- #AC8700
#AC8700
oklch(64% 0.131 89.2)
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 #6684EC, closest first.
No curated palette has a color within ΔE 0.04 of #6684EC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Blue #6488EA ΔE 0.011
- Cornflower #6A79F7 ΔE 0.034
- Dark Sky Blue #448EE4 ΔE 0.043
- Cornflower Blue #6495ED ΔE 0.044
- Chefchaouen Blue #4895EF ΔE 0.048
- Lavender Blue #8B88F8 ΔE 0.054
- Dodger Blue #1E90FF ΔE 0.059
- Periwinkle #8E82FE ΔE 0.060
Use #6684EC 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.