#4369D1
Closest named color: Royal Blue (#4169E1). oklch(54.9% 0.166 266), rgb(67, 105, 209).
Aa
White text reads best on this color (5.02:1).
About this color
#4369D1 is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.166 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.025 away. White text reads best on it, at 5.02:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.166) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.17:1 |
| White text | 5.02:1 |
Values
| HEX | #4369D1 |
| RGB | rgb(67, 105, 209) |
| HSL | hsl(224, 61%, 54%) |
| OKLCH | oklch(54.9% 0.166 266) |
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 #4369D1 | 5.02:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #4369D1 | 4.17:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #4369D1 text on white | 5.02:1 | AA | Lc 74.4 | Content text, not long reading |
| #4369D1 text on black | 4.17:1 | AA large text | Lc -27.3 | 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
#E3EAF9
oklch(93.6% 0.022 265.8)
-
Step 200
200
#CCD9F6
oklch(88.5% 0.042 266.3)
-
Step 300
300
#AAC0F2
oklch(80.9% 0.075 266.2)
-
Step 400
400
#7D9EEB
oklch(70.6% 0.119 265.8)
-
Step 500
500
#5D84E5
oklch(63.1% 0.152 265.7)
-
Step 600
600 (this color)
#4369D1
oklch(54.9% 0.166 266)
-
Step 700
700
#3759B7
oklch(49.2% 0.154 265.9)
-
Step 800
800
#2D4994
oklch(42.7% 0.128 265.8)
-
Step 900
900
#283E76
oklch(37.7% 0.1 265.7)
-
Step 950
950
#182545
oklch(27.1% 0.062 265.8)
#4369D1 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) | #2D76D5 | 0.035 |
| Deuteranopia (no green cones) | #0069CF | 0.038 |
| Tritanopia (no blue cones) | #008193 | 0.135 |
| Achromatopsia (no color) | #6F6F6F | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4369D1
#4369D1
oklch(54.9% 0.166 266)
- #8E6B00
#8E6B00
oklch(54.8% 0.112 85.9)
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 #4369D1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.025
- Warm Blue #4B57DB ΔE 0.046
- Dark Periwinkle #665FD1 ΔE 0.047
- Neon Blue #4361EE ΔE 0.049
- Windows Blue #3778BF ΔE 0.053
- Cerulean Blue #056EEE ΔE 0.053
- Mid Blue #276AB3 ΔE 0.055
- Iris #6258C4 ΔE 0.055
Use #4369D1 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.