#4367BC
Closest named color: French Blue (#436BAD). oklch(53.1% 0.14 264.8), rgb(67, 103, 188).
Aa
White text reads best on this color (5.37:1).
About this color
#4367BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.140 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.028 away. White text reads best on it, at 5.37:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.140) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.90:1 |
| White text | 5.37:1 |
Values
| HEX | #4367BC |
| RGB | rgb(67, 103, 188) |
| HSL | hsl(222, 47%, 50%) |
| OKLCH | oklch(53.1% 0.14 264.8) |
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 #4367BC | 5.37:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #4367BC | 3.90:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #4367BC text on white | 5.37:1 | AA | Lc 76.5 | Fine for body text |
| #4367BC text on black | 3.90:1 | AA large text | Lc -25.2 | 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
#F3F5FB
oklch(97% 0.008 271.3)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CED9F1
oklch(88.4% 0.035 266)
-
Step 300
300
#ADC1EA
oklch(81% 0.062 264.6)
-
Step 400
400
#82A0E0
oklch(70.8% 0.1 264.7)
-
Step 500
500
#6386D7
oklch(63% 0.129 265.2)
-
Step 600
600 (this color)
#4367BC
oklch(53.1% 0.14 264.8)
-
Step 700
700
#3B5CAA
oklch(49.1% 0.131 264.8)
-
Step 800
800
#314C89
oklch(42.8% 0.106 264.4)
-
Step 900
900
#2B406E
oklch(37.8% 0.083 264.3)
-
Step 950
950
#192540
oklch(26.8% 0.053 264.9)
#4367BC 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) | #3E70BF | 0.024 |
| Deuteranopia (no green cones) | #2A65BA | 0.025 |
| Tritanopia (no blue cones) | #007A88 | 0.117 |
| Achromatopsia (no color) | #6A6A6A | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4367BC
#4367BC
oklch(53.1% 0.14 264.8)
- #896600
#896600
oklch(53.1% 0.109 84.9)
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 #4367BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.028
- Mid Blue #276AB3 ΔE 0.030
- Windows Blue #3778BF ΔE 0.046
- Flat Blue #3C73A8 ΔE 0.051
- Iris #6258C4 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.057
- Muted Blue #3B719F ΔE 0.059
- Dark Periwinkle #665FD1 ΔE 0.059
Use #4367BC 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.