#6390FF
Closest named color: Cornflower Blue (#6495ED). oklch(67.4% 0.171 265.5), rgb(99, 144, 255).
Aa
Black text reads best on this color (6.96:1).
About this color
#6390FF is a medium-light, vivid blue. In OKLCH its lightness is 67%, its chroma 0.171 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower Blue (#6495ED), ΔE 0.032 away. Black text reads best on it, at 6.96:1.
| Hue family | Blues |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.171) |
| Temperature | cool |
| Nearest name | Cornflower Blue (#6495ED) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #6390FF |
| RGB | rgb(99, 144, 255) |
| HSL | hsl(223, 100%, 69%) |
| OKLCH | oklch(67.4% 0.171 265.5) |
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 #6390FF | 3.01:1 | AA large text | Lc -62.0 | Content text, not long reading |
| Black text on #6390FF | 6.96:1 | AA | Lc 47.4 | Large or bold text, headings |
| #6390FF text on white | 3.01:1 | AA large text | Lc 56.6 | Large or bold text, headings |
| #6390FF text on black | 6.96:1 | AA | Lc -45.2 | Large or bold text, headings |
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 400.
-
Step 50
50
#F1F6FF
oklch(97.2% 0.013 262.4)
-
Step 100
100
#E0EAFF
oklch(93.6% 0.03 265.3)
-
Step 200
200
#C8D9FF
oklch(88.5% 0.056 266.2)
-
Step 300
300
#A3C0FF
oklch(80.9% 0.095 265.2)
-
Step 400
400 (this color)
#6390FF
oklch(67.4% 0.171 265.5)
-
Step 500
500
#4F7FFF
oklch(63.1% 0.197 265.6)
-
Step 600
600
#2E5FFB
oklch(55.5% 0.238 265.4)
-
Step 700
700
#234DDB
oklch(49.1% 0.221 265.5)
-
Step 800
800
#1D40B1
oklch(42.6% 0.184 265.5)
-
Step 900
900
#1C398C
oklch(37.8% 0.142 265.3)
-
Step 950
950
#112252
oklch(27% 0.091 265.8)
#6390FF 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) | #5C9CFF | 0.031 |
| Deuteranopia (no green cones) | #448EFD | 0.030 |
| Tritanopia (no blue cones) | #00A9BB | 0.146 |
| Achromatopsia (no color) | #949494 | 0.172 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6390FF
#6390FF
oklch(67.4% 0.171 265.5)
- #BD8F00
#BD8F00
oklch(67.5% 0.138 85.6)
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 #6390FF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower Blue #6495ED ΔE 0.032
- Soft Blue #6488EA ΔE 0.034
- Chefchaouen Blue #4895EF ΔE 0.038
- Dodger Blue #1E90FF ΔE 0.048
- Lavender Blue #8B88F8 ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.052
- Cornflower #6A79F7 ΔE 0.056
- Periwinkle #8E82FE ΔE 0.060
Use #6390FF 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.