#6578FF
Closest named color: Cornflower (#6A79F7). oklch(62.9% 0.2 273.2), rgb(101, 120, 255).
Aa
Black text reads best on this color (5.68:1).
About this color
#6578FF is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.200 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.014 away. Black text reads best on it, at 5.68:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.200) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.68:1 |
| White text | 3.69:1 |
Values
| HEX | #6578FF |
| RGB | rgb(101, 120, 255) |
| HSL | hsl(233, 100%, 70%) |
| OKLCH | oklch(62.9% 0.2 273.2) |
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 #6578FF | 3.69:1 | AA large text | Lc -69.7 | Content text, not long reading |
| Black text on #6578FF | 5.68:1 | AA | Lc 39.9 | Non-text elements, placeholder text |
| #6578FF text on white | 3.69:1 | AA large text | Lc 64.2 | Content text, not long reading |
| #6578FF text on black | 5.68:1 | AA | Lc -37.5 | 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
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FD
oklch(93.5% 0.028 272.5)
-
Step 200
200
#CDD7FE
oklch(88.4% 0.055 273.9)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8297FF
oklch(70.6% 0.154 273.2)
-
Step 500
500 (this color)
#6578FF
oklch(62.9% 0.2 273.2)
-
Step 600
600
#505DEF
oklch(55.6% 0.217 273.2)
-
Step 700
700
#424BD0
oklch(49.1% 0.202 273.3)
-
Step 800
800
#363FA8
oklch(42.8% 0.166 273.3)
-
Step 900
900
#2D3785
oklch(37.7% 0.13 273)
-
Step 950
950
#1A214E
oklch(27% 0.083 273)
#6578FF 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) | #1E8CFF | 0.066 |
| Deuteranopia (no green cones) | #007EFC | 0.065 |
| Tritanopia (no blue cones) | #0098B0 | 0.172 |
| Achromatopsia (no color) | #858585 | 0.200 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6578FF
#6578FF
oklch(62.9% 0.2 273.2)
- #A38600
#A38600
oklch(62.9% 0.129 93.5)
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 #6578FF, closest first.
No curated palette has a color within ΔE 0.04 of #6578FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.014
- Medium Slate Blue #7B68EE ΔE 0.049
- Soft Blue #6488EA ΔE 0.054
- Clear Blue #247AFD ΔE 0.056
- Periwinkle #8E82FE ΔE 0.064
- Lavender Blue #8B88F8 ΔE 0.070
- Dodger Blue #1E90FF ΔE 0.072
- Royal Blue #4169E1 ΔE 0.074
Use #6578FF 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.