#426ACB
Closest named color: Royal Blue (#4169E1). oklch(54.7% 0.157 264.8), rgb(66, 106, 203).
Aa
White text reads best on this color (5.05:1).
About this color
#426ACB is a medium-dark, vivid blue. In OKLCH its lightness is 55%, its chroma 0.157 and its hue 265°. 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 5.05:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | vivid (0.157) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.15:1 |
| White text | 5.05:1 |
Values
| HEX | #426ACB |
| RGB | rgb(66, 106, 203) |
| HSL | hsl(222, 57%, 53%) |
| OKLCH | oklch(54.7% 0.157 264.8) |
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 #426ACB | 5.05:1 | AA | Lc -80.0 | Fine for body text |
| Black text on #426ACB | 4.15:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #426ACB text on white | 5.05:1 | AA | Lc 74.6 | Content text, not long reading |
| #426ACB text on black | 4.15:1 | AA large text | Lc -27.1 | 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
#CCD9F4
oklch(88.4% 0.04 265.1)
-
Step 300
300
#AAC1EF
oklch(81% 0.07 264.1)
-
Step 400
400
#7E9FE7
oklch(70.7% 0.112 264.9)
-
Step 500
500
#5E85E0
oklch(63.1% 0.144 265.1)
-
Step 600
600 (this color)
#426ACB
oklch(54.7% 0.157 264.8)
-
Step 700
700
#365AB2
oklch(49% 0.146 264.8)
-
Step 800
800
#2D4A90
oklch(42.6% 0.121 264.8)
-
Step 900
900
#283F73
oklch(37.7% 0.094 264.4)
-
Step 950
950
#182543
oklch(27% 0.059 265)
#426ACB 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) | #3775CF | 0.029 |
| Deuteranopia (no green cones) | #1669C9 | 0.032 |
| Tritanopia (no blue cones) | #008191 | 0.129 |
| Achromatopsia (no color) | #6F6F6F | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #426ACB
#426ACB
oklch(54.7% 0.157 264.8)
- #8E6A00
#8E6A00
oklch(54.6% 0.112 85)
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 #426ACB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.034
- Windows Blue #3778BF ΔE 0.045
- Mid Blue #276AB3 ΔE 0.046
- French Blue #436BAD ΔE 0.048
- Dark Periwinkle #665FD1 ΔE 0.051
- Warm Blue #4B57DB ΔE 0.054
- Iris #6258C4 ΔE 0.056
- Neon Blue #4361EE ΔE 0.059
Use #426ACB 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.