#6373F8
Closest named color: Cornflower (#6A79F7). oklch(61.4% 0.197 273.9), rgb(99, 115, 248).
Aa
Black text reads best on this color (5.33:1).
About this color
#6373F8 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 0.018 away. Black text reads best on it, at 5.33:1.
| Hue family | Blues |
| Lightness | medium-dark (61%) |
| Chroma | vivid (0.197) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.33:1 |
| White text | 3.93:1 |
Values
| HEX | #6373F8 |
| RGB | rgb(99, 115, 248) |
| HSL | hsl(234, 91%, 68%) |
| OKLCH | oklch(61.4% 0.197 273.9) |
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 #6373F8 | 3.93:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #6373F8 | 5.33:1 | AA | Lc 37.7 | Non-text elements, placeholder text |
| #6373F8 text on white | 3.93:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #6373F8 text on black | 5.33:1 | AA | Lc -35.3 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
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
#ADBCFF
oklch(80.8% 0.096 274.3)
-
Step 400
400
#8497FF
oklch(70.7% 0.153 274)
-
Step 500
500 (this color)
#6373F8
oklch(61.4% 0.197 273.9)
-
Step 600
600
#525DED
oklch(55.6% 0.214 273.8)
-
Step 700
700
#444BCF
oklch(49.2% 0.2 274)
-
Step 800
800
#373FA7
oklch(42.8% 0.165 273.7)
-
Step 900
900
#2F3784
oklch(37.7% 0.128 274)
-
Step 950
950
#1B214D
oklch(27% 0.081 273.9)
#6373F8 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) | #1487FD | 0.068 |
| Deuteranopia (no green cones) | #007AF5 | 0.065 |
| Tritanopia (no blue cones) | #0092AA | 0.170 |
| Achromatopsia (no color) | #808080 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6373F8
#6373F8
oklch(61.4% 0.197 273.9)
- #9D8200
#9D8200
oklch(61.4% 0.126 94.3)
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 #6373F8, closest first.
No curated palette has a color within ΔE 0.04 of #6373F8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.018
- Medium Slate Blue #7B68EE ΔE 0.041
- Clear Blue #247AFD ΔE 0.054
- Soft Blue #6488EA ΔE 0.059
- Royal Blue #4169E1 ΔE 0.060
- Neon Blue #4361EE ΔE 0.063
- Dark Periwinkle #665FD1 ΔE 0.072
- Periwinkle #8E82FE ΔE 0.074
Use #6373F8 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.