#6381FF
Closest named color: Cornflower (#6A79F7). oklch(64.5% 0.189 270.3), rgb(99, 129, 255).
Aa
Black text reads best on this color (6.11:1).
About this color
#6381FF is a medium-light, vivid blue. In OKLCH its lightness is 64%, its chroma 0.189 and its hue 270°. 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 6.11:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.189) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 6.11:1 |
| White text | 3.43:1 |
Values
| HEX | #6381FF |
| RGB | rgb(99, 129, 255) |
| HSL | hsl(228, 100%, 69%) |
| OKLCH | oklch(64.5% 0.189 270.3) |
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 #6381FF | 3.43:1 | AA large text | Lc -67.0 | Content text, not long reading |
| Black text on #6381FF | 6.11:1 | AA | Lc 42.5 | Non-text elements, placeholder text |
| #6381FF text on white | 3.43:1 | AA large text | Lc 61.5 | Content text, not long reading |
| #6381FF text on black | 6.11:1 | AA | Lc -40.1 | 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
#F2F5FE
oklch(97% 0.012 271.3)
-
Step 100
100
#E3E9FC
oklch(93.5% 0.027 271.9)
-
Step 200
200
#CCD8FC
oklch(88.5% 0.051 270.8)
-
Step 300
300
#A9BEFD
oklch(80.8% 0.092 270)
-
Step 400
400
#7D9AFC
oklch(70.7% 0.147 269.9)
-
Step 500
500 (this color)
#6381FF
oklch(64.5% 0.189 270.3)
-
Step 600
600
#4862E9
oklch(55.6% 0.205 270.1)
-
Step 700
700
#3B50CB
oklch(49.2% 0.191 270.3)
-
Step 800
800
#3042A4
oklch(42.7% 0.159 270.3)
-
Step 900
900
#2A3982
oklch(37.6% 0.124 270.6)
-
Step 950
950
#18224C
oklch(26.9% 0.079 270.3)
#6381FF 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) | #3C92FF | 0.050 |
| Deuteranopia (no green cones) | #1484FC | 0.056 |
| Tritanopia (no blue cones) | #009EB4 | 0.161 |
| Achromatopsia (no color) | #8A8A8A | 0.190 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6381FF
#6381FF
oklch(64.5% 0.189 270.3)
- #AC8900
#AC8900
oklch(64.5% 0.132 90.6)
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 #6381FF, closest first.
No curated palette has a color within ΔE 0.04 of #6381FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.022
- Soft Blue #6488EA ΔE 0.038
- Dodger Blue #1E90FF ΔE 0.057
- Periwinkle #8E82FE ΔE 0.057
- Lavender Blue #8B88F8 ΔE 0.058
- Clear Blue #247AFD ΔE 0.059
- Cornflower Blue #6495ED ΔE 0.062
- Chefchaouen Blue #4895EF ΔE 0.062
Use #6381FF 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.