#6367B1
Closest named color: French Blue (#436BAD). oklch(54.4% 0.114 279.5), rgb(99, 103, 177).
Aa
White text reads best on this color (5.11:1).
About this color
#6367B1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.114 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.041 away. White text reads best on it, at 5.11:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.114) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #6367B1 |
| RGB | rgb(99, 103, 177) |
| HSL | hsl(237, 33%, 54%) |
| OKLCH | oklch(54.4% 0.114 279.5) |
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 #6367B1 | 5.11:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #6367B1 | 4.10:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #6367B1 text on white | 5.11:1 | AA | Lc 75.2 | Fine for body text |
| #6367B1 text on black | 4.10:1 | AA large text | Lc -26.6 | Dividers and decoration only |
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 600.
-
Step 50
50
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E7E9F4
oklch(93.6% 0.015 277.8)
-
Step 200
200
#D5D8EC
oklch(88.6% 0.028 279)
-
Step 300
300
#B9BEE2
oklch(80.9% 0.051 279)
-
Step 400
400
#969BD4
oklch(70.7% 0.083 280.1)
-
Step 500
500
#7D82C8
oklch(63.1% 0.105 279.8)
-
Step 600
600 (this color)
#6367B1
oklch(54.4% 0.114 279.5)
-
Step 700
700
#55589C
oklch(49% 0.108 279.7)
-
Step 800
800
#46497E
oklch(42.8% 0.087 279.6)
-
Step 900
900
#3A3D65
oklch(37.6% 0.068 279.3)
-
Step 950
950
#22243B
oklch(27% 0.043 279.3)
#6367B1 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) | #4C71B4 | 0.037 |
| Deuteranopia (no green cones) | #476BAF | 0.036 |
| Tritanopia (no blue cones) | #4A7683 | 0.100 |
| Achromatopsia (no color) | #6E6E6E | 0.115 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #6367B1
#6367B1
oklch(54.4% 0.114 279.5)
- #807000
#807000
oklch(54.4% 0.113 99.3)
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 #6367B1, closest first.
No curated palette has a color within ΔE 0.04 of #6367B1.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.041
- Iris #6258C4 ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.057
- Flat Blue #3C73A8 ΔE 0.057
- Slate Blue #6A5ACD ΔE 0.059
- Windows Blue #3778BF ΔE 0.061
- Light Indigo #6D5ACF ΔE 0.062
- Mid Blue #276AB3 ΔE 0.064
Use #6367B1 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.