#6377FF
Closest named color: Cornflower (#6A79F7). oklch(62.6% 0.201 272.9), rgb(99, 119, 255).
Aa
Black text reads best on this color (5.61:1).
About this color
#6377FF is a medium-light, vivid blue. In OKLCH its lightness is 63%, its chroma 0.201 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.016 away. Black text reads best on it, at 5.61:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | vivid (0.201) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.61:1 |
| White text | 3.74:1 |
Values
| HEX | #6377FF |
| RGB | rgb(99, 119, 255) |
| HSL | hsl(232, 100%, 69%) |
| OKLCH | oklch(62.6% 0.201 272.9) |
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 #6377FF | 3.74:1 | AA large text | Lc -70.1 | Content text, not long reading |
| Black text on #6377FF | 5.61:1 | AA | Lc 39.5 | Non-text elements, placeholder text |
| #6377FF text on white | 3.74:1 | AA large text | Lc 64.6 | Content text, not long reading |
| #6377FF text on black | 5.61:1 | AA | Lc -37.1 | 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
#E3E9FE
oklch(93.6% 0.029 273.1)
-
Step 200
200
#CDD8FE
oklch(88.6% 0.054 272.5)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8298FF
oklch(70.8% 0.152 272.8)
-
Step 500
500 (this color)
#6377FF
oklch(62.6% 0.201 272.9)
-
Step 600
600
#4F5DF0
oklch(55.7% 0.218 272.9)
-
Step 700
700
#414BD1
oklch(49.2% 0.203 273)
-
Step 800
800
#353FA9
oklch(42.8% 0.168 272.9)
-
Step 900
900
#2D3786
oklch(37.8% 0.131 272.9)
-
Step 950
950
#1A214E
oklch(27% 0.083 273)
#6377FF 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) | #178BFF | 0.066 |
| Deuteranopia (no green cones) | #007DFC | 0.063 |
| Tritanopia (no blue cones) | #0097B0 | 0.171 |
| Achromatopsia (no color) | #848484 | 0.202 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6377FF
#6377FF
oklch(62.6% 0.201 272.9)
- #A38500
#A38500
oklch(62.7% 0.128 92.9)
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 #6377FF, closest first.
No curated palette has a color within ΔE 0.04 of #6377FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.016
- Medium Slate Blue #7B68EE ΔE 0.049
- Clear Blue #247AFD ΔE 0.053
- Soft Blue #6488EA ΔE 0.056
- Periwinkle #8E82FE ΔE 0.067
- Royal Blue #4169E1 ΔE 0.071
- Dodger Blue #1E90FF ΔE 0.073
- Neon Blue #4361EE ΔE 0.073
Use #6377FF 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.