#4367CB
Closest named color: Royal Blue (#4169E1). oklch(54.1% 0.16 266.2), rgb(67, 103, 203).
Aa
White text reads best on this color (5.19:1).
About this color
#4367CB is a medium-dark, vivid blue. In OKLCH its lightness is 54%, its chroma 0.160 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.034 away. White text reads best on it, at 5.19:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | vivid (0.160) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.04:1 |
| White text | 5.19:1 |
Values
| HEX | #4367CB |
| RGB | rgb(67, 103, 203) |
| HSL | hsl(224, 57%, 53%) |
| OKLCH | oklch(54.1% 0.16 266.2) |
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 #4367CB | 5.19:1 | AA | Lc -80.8 | Fine for body text |
| Black text on #4367CB | 4.04:1 | AA large text | Lc 28.6 | Dividers and decoration only |
| #4367CB text on white | 5.19:1 | AA | Lc 75.4 | Fine for body text |
| #4367CB text on black | 4.04:1 | AA large text | Lc -26.3 | 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
#F2F5FC
oklch(97% 0.01 267.4)
-
Step 100
100
#E3EAF8
oklch(93.6% 0.02 264.5)
-
Step 200
200
#CDD9F5
oklch(88.5% 0.041 267.1)
-
Step 300
300
#ABC0F0
oklch(80.9% 0.072 266.3)
-
Step 400
400
#7F9EE9
oklch(70.7% 0.116 266.4)
-
Step 500
500
#6084E2
oklch(63.1% 0.147 266.5)
-
Step 600
600 (this color)
#4367CB
oklch(54.1% 0.16 266.2)
-
Step 700
700
#3959B4
oklch(49% 0.149 266.4)
-
Step 800
800
#2F4992
oklch(42.6% 0.124 266.4)
-
Step 900
900
#293E74
oklch(37.6% 0.096 266)
-
Step 950
950
#182544
oklch(27% 0.061 265.4)
#4367CB 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) | #2F73CF | 0.033 |
| Deuteranopia (no green cones) | #0467C9 | 0.038 |
| Tritanopia (no blue cones) | #007E8F | 0.132 |
| Achromatopsia (no color) | #6D6D6D | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4367CB
#4367CB
oklch(54.1% 0.16 266.2)
- #8B6900
#8B6900
oklch(54% 0.111 86.2)
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 #4367CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.034
- Warm Blue #4B57DB ΔE 0.047
- Mid Blue #276AB3 ΔE 0.047
- Dark Periwinkle #665FD1 ΔE 0.048
- French Blue #436BAD ΔE 0.050
- Iris #6258C4 ΔE 0.050
- Windows Blue #3778BF ΔE 0.052
- Neon Blue #4361EE ΔE 0.056
Use #4367CB 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.