#6375D6
Closest named color: Cornflower (#6A79F7). oklch(59.5% 0.148 273.2), rgb(99, 117, 214).
Aa
Black text reads best on this color (5.04:1).
About this color
#6375D6 is a medium-dark, vivid blue. In OKLCH its lightness is 59%, its chroma 0.148 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Cornflower (#6A79F7), ΔE 0.051 away. Black text reads best on it, at 5.04:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | vivid (0.148) |
| Temperature | cool |
| Nearest name | Cornflower (#6A79F7) |
| Black text | 5.04:1 |
| White text | 4.16:1 |
Values
| HEX | #6375D6 |
| RGB | rgb(99, 117, 214) |
| HSL | hsl(231, 58%, 61%) |
| OKLCH | oklch(59.5% 0.148 273.2) |
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 #6375D6 | 4.16:1 | AA large text | Lc -74.0 | Content text, not long reading |
| Black text on #6375D6 | 5.04:1 | AA | Lc 35.6 | Non-text elements, placeholder text |
| #6375D6 text on white | 4.16:1 | AA large text | Lc 68.5 | Content text, not long reading |
| #6375D6 text on black | 5.04:1 | AA | Lc -33.2 | 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
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F8
oklch(93.5% 0.021 274)
-
Step 200
200
#D0D8F5
oklch(88.5% 0.041 273.3)
-
Step 300
300
#B1BEF0
oklch(80.9% 0.072 273.3)
-
Step 400
400
#899BE9
oklch(70.7% 0.116 273.2)
-
Step 500
500 (this color)
#6375D6
oklch(59.5% 0.148 273.2)
-
Step 600
600
#5667D0
oklch(55.5% 0.162 273.1)
-
Step 700
700
#4755B4
oklch(49% 0.15 273.3)
-
Step 800
800
#3A4692
oklch(42.6% 0.125 273.2)
-
Step 900
900
#323C74
oklch(37.8% 0.096 273.3)
-
Step 950
950
#1D2344
oklch(26.9% 0.062 273.8)
#6375D6 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) | #4A81DA | 0.038 |
| Deuteranopia (no green cones) | #3C78D4 | 0.041 |
| Tritanopia (no blue cones) | #2A8A9B | 0.132 |
| Achromatopsia (no color) | #7C7C7C | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6375D6
#6375D6
oklch(59.5% 0.148 273.2)
- #987C00
#987C00
oklch(59.6% 0.122 93)
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 #6375D6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cornflower #6A79F7 ΔE 0.051
- Soft Blue #6488EA ΔE 0.054
- Dark Periwinkle #665FD1 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.057
- Medium Slate Blue #7B68EE ΔE 0.059
- Windows Blue #3778BF ΔE 0.061
- Light Indigo #6D5ACF ΔE 0.065
- Slate Blue #6A5ACD ΔE 0.066
Use #6375D6 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.