#6371F6
Closest named color: Cornflower (#6A79F7). oklch(60.9% 0.197 274.4), rgb(99, 113, 246).
Aa
Black text reads best on this color (5.22:1).
About this color
#6371F6 is a medium-dark, vivid blue. In OKLCH its lightness is 61%, its chroma 0.197 and its hue 274°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.022 away. Black text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.197) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.22:1 |
| White text | 4.02:1 |
Values
| HEX | #6371F6 |
| RGB | rgb(99, 113, 246) |
| HSL | hsl(234, 89%, 68%) |
| OKLCH | oklch(60.9% 0.197 274.4) |
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 #6371F6 | 4.02:1 | AA large text | Lc -72.6 | Content text, not long reading |
| Black text on #6371F6 | 5.22:1 | AA | Lc 37.0 | Non-text elements, placeholder text |
| #6371F6 text on white | 4.02:1 | AA large text | Lc 67.1 | Content text, not long reading |
| #6371F6 text on black | 5.22:1 | AA | Lc -34.5 | 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
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E4E9FD
oklch(93.6% 0.028 274.7)
-
Step 200
200
#CED7FD
oklch(88.4% 0.053 274.8)
-
Step 300
300
#AEBCFF
oklch(80.9% 0.096 274.9)
-
Step 400
400
#8597FF
oklch(70.8% 0.153 274.4)
-
Step 500
500 (this color)
#6371F6
oklch(60.9% 0.197 274.4)
-
Step 600
600
#545CED
oklch(55.5% 0.214 274.6)
-
Step 700
700
#454BCE
oklch(49.1% 0.198 274.4)
-
Step 800
800
#383EA7
oklch(42.6% 0.166 274.4)
-
Step 900
900
#2F3784
oklch(37.7% 0.128 274)
-
Step 950
950
#1B214D
oklch(27% 0.081 273.9)
#6371F6 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) | #0D85FB | 0.069 |
| Deuteranopia (no green cones) | #0079F3 | 0.066 |
| Tritanopia (no blue cones) | #0090A9 | 0.168 |
| Achromatopsia (no color) | #7F7F7F | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6371F6
#6371F6
oklch(60.9% 0.197 274.4)
- #9B8100
#9B8100
oklch(61% 0.125 94.7)
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 #6371F6, closest first.
No curated palette has a color within ΔE 0.04 of #6371F6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.022
- Medium Slate Blue #7B68EE ΔE 0.038
- Clear Blue #247AFD ΔE 0.055
- Royal Blue #4169E1 ΔE 0.056
- Neon Blue #4361EE ΔE 0.059
- Soft Blue #6488EA ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.067
- Cerulean Blue #056EEE ΔE 0.073
Use #6371F6 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.