#6375DB
Closest named color: Cornflower (#6A79F7). oklch(59.8% 0.155 273.3), rgb(99, 117, 219).
Aa
Black text reads best on this color (5.09:1).
About this color
#6375DB is a medium-dark, vivid blue. In OKLCH its lightness is 60%, its chroma 0.155 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.044 away. Black text reads best on it, at 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.155) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.09:1 |
| White text | 4.11:1 |
Values
| HEX | #6375DB |
| RGB | rgb(99, 117, 219) |
| HSL | hsl(231, 62%, 62%) |
| OKLCH | oklch(59.8% 0.155 273.3) |
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 #6375DB | 4.11:1 | AA large text | Lc -73.6 | Content text, not long reading |
| Black text on #6375DB | 5.09:1 | AA | Lc 36.0 | Non-text elements, placeholder text |
| #6375DB text on white | 4.11:1 | AA large text | Lc 68.1 | Content text, not long reading |
| #6375DB text on black | 5.09:1 | AA | Lc -33.6 | 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
#F3F5FD
oklch(97.1% 0.011 274.9)
-
Step 100
100
#E5E9F9
oklch(93.6% 0.022 274.7)
-
Step 200
200
#D0D8F6
oklch(88.6% 0.042 273.7)
-
Step 300
300
#B0BEF2
oklch(80.9% 0.075 272.9)
-
Step 400
400
#889AEC
oklch(70.6% 0.122 273.5)
-
Step 500
500 (this color)
#6375DB
oklch(59.8% 0.155 273.3)
-
Step 600
600
#5666D4
oklch(55.6% 0.168 273.4)
-
Step 700
700
#4654B8
oklch(49.1% 0.157 273.2)
-
Step 800
800
#3A4595
oklch(42.7% 0.131 273.6)
-
Step 900
900
#313B77
oklch(37.7% 0.102 273.4)
-
Step 950
950
#1D2345
oklch(27% 0.063 273.9)
#6375DB 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) | #4682DF | 0.041 |
| Deuteranopia (no green cones) | #3678D9 | 0.046 |
| Tritanopia (no blue cones) | #228C9D | 0.139 |
| Achromatopsia (no color) | #7D7D7D | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6375DB
#6375DB
oklch(59.8% 0.155 273.3)
- #997D00
#997D00
oklch(59.9% 0.123 93.1)
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 #6375DB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.044
- Soft Blue #6488EA ΔE 0.051
- Medium Slate Blue #7B68EE ΔE 0.054
- Royal Blue #4169E1 ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.054
- Light Indigo #6D5ACF ΔE 0.066
- Windows Blue #3778BF ΔE 0.066
- Slate Blue #6A5ACD ΔE 0.067
Use #6375DB 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.