#426DE1
Closest named color: Royal Blue (#4169E1). oklch(56.8% 0.183 265.6), rgb(66, 109, 225).
Aa
White text reads best on this color (4.66:1).
About this color
#426DE1 is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.183 and its hue 266°. Its hue sits on the cool side of the wheel. The nearest named color is Royal Blue (#4169E1), ΔE 0.010 away. White text reads best on it, at 4.66:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.183) |
| Temperature | cool |
| Nearest name | Royal Blue (#4169E1) |
| Black text | 4.50:1 |
| White text | 4.66:1 |
Values
| HEX | #426DE1 |
| RGB | rgb(66, 109, 225) |
| HSL | hsl(224, 73%, 57%) |
| OKLCH | oklch(56.8% 0.183 265.6) |
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 #426DE1 | 4.66:1 | AA | Lc -77.4 | Fine for body text |
| Black text on #426DE1 | 4.50:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #426DE1 text on white | 4.66:1 | AA | Lc 71.9 | Content text, not long reading |
| #426DE1 text on black | 4.50:1 | AA | Lc -29.7 | 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
#F2F5FD
oklch(97% 0.011 269.6)
-
Step 100
100
#E2EAFA
oklch(93.6% 0.023 264.5)
-
Step 200
200
#CBD9F8
oklch(88.5% 0.045 266.2)
-
Step 300
300
#A7C0F7
oklch(80.9% 0.083 265.6)
-
Step 400
400
#799EF3
oklch(70.8% 0.132 265.3)
-
Step 500
500
#5883EE
oklch(63.2% 0.167 265.4)
-
Step 600
600 (this color)
#426DE1
oklch(56.8% 0.183 265.6)
-
Step 700
700
#3157C0
oklch(49.2% 0.171 265.4)
-
Step 800
800
#29489B
oklch(42.8% 0.141 265.4)
-
Step 900
900
#253D7B
oklch(37.7% 0.11 265.5)
-
Step 950
950
#162448
oklch(26.9% 0.07 265.9)
#426DE1 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) | #217CE5 | 0.040 |
| Deuteranopia (no green cones) | #006DDF | 0.035 |
| Tritanopia (no blue cones) | #00899D | 0.147 |
| Achromatopsia (no color) | #747474 | 0.183 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #426DE1
#426DE1
oklch(56.8% 0.183 265.6)
- #967000
#967000
oklch(56.8% 0.116 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 #426DE1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Royal Blue #4169E1 ΔE 0.010
- Neon Blue #4361EE ΔE 0.035
- Cerulean Blue #056EEE ΔE 0.037
- Clear Blue #247AFD ΔE 0.051
- Warm Blue #4B57DB ΔE 0.052
- Dark Periwinkle #665FD1 ΔE 0.055
- Azul #1D5DEC ΔE 0.055
- Bright Blue #0165FC ΔE 0.058
Use #426DE1 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.