#6377F5
Closest named color: Cornflower (#6A79F7). oklch(61.9% 0.188 272.9), rgb(99, 119, 245).
Aa
Black text reads best on this color (5.48:1).
About this color
#6377F5 is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.188 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.011 away. Black text reads best on it, at 5.48:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.188) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.48:1 |
| White text | 3.82:1 |
Values
| HEX | #6377F5 |
| RGB | rgb(99, 119, 245) |
| HSL | hsl(232, 88%, 67%) |
| OKLCH | oklch(61.9% 0.188 272.9) |
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 #6377F5 | 3.82:1 | AA large text | Lc -70.9 | Content text, not long reading |
| Black text on #6377F5 | 5.48:1 | AA | Lc 38.6 | Non-text elements, placeholder text |
| #6377F5 text on white | 3.82:1 | AA large text | Lc 65.4 | Content text, not long reading |
| #6377F5 text on black | 5.48:1 | AA | Lc -36.2 | 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
#E4E9FC
oklch(93.6% 0.026 274.1)
-
Step 200
200
#CDD8FC
oklch(88.5% 0.051 271.9)
-
Step 300
300
#ADBDFD
oklch(80.9% 0.092 273.3)
-
Step 400
400
#8398FC
oklch(70.7% 0.148 273.1)
-
Step 500
500 (this color)
#6377F5
oklch(61.9% 0.188 272.9)
-
Step 600
600
#5060E8
oklch(55.6% 0.204 272.7)
-
Step 700
700
#424ECA
oklch(49.1% 0.19 272.9)
-
Step 800
800
#3641A3
oklch(42.7% 0.157 272.9)
-
Step 900
900
#2E3881
oklch(37.6% 0.123 273.2)
-
Step 950
950
#1B224C
oklch(27.1% 0.078 273)
#6377F5 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) | #2D89F9 | 0.058 |
| Deuteranopia (no green cones) | #007CF2 | 0.064 |
| Tritanopia (no blue cones) | #0094AB | 0.162 |
| Achromatopsia (no color) | #828282 | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6377F5
#6377F5
oklch(61.9% 0.188 272.9)
- #A08300
#A08300
oklch(61.9% 0.127 93.2)
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 #6377F5, closest first.
No curated palette has a color within ΔE 0.04 of #6377F5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.011
- Medium Slate Blue #7B68EE ΔE 0.045
- Soft Blue #6488EA ΔE 0.048
- Clear Blue #247AFD ΔE 0.054
- Royal Blue #4169E1 ΔE 0.063
- Periwinkle #8E82FE ΔE 0.069
- Neon Blue #4361EE ΔE 0.070
- Dark Sky Blue #448EE4 ΔE 0.071
Use #6377F5 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.