#426DBF
Closest named color: French Blue (#436BAD). oklch(54.5% 0.137 262), rgb(66, 109, 191).
Aa
White text reads best on this color (5.03:1).
About this color
#426DBF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.137 and its hue 262°. 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 5.03:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.17:1 |
| White text | 5.03:1 |
Values
| HEX | #426DBF |
| RGB | rgb(66, 109, 191) |
| HSL | hsl(219, 49%, 50%) |
| OKLCH | oklch(54.5% 0.137 262) |
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 #426DBF | 5.03:1 | AA | Lc -79.9 | Fine for body text |
| Black text on #426DBF | 4.17:1 | AA large text | Lc 29.5 | Dividers and decoration only |
| #426DBF text on white | 5.03:1 | AA | Lc 74.5 | Content text, not long reading |
| #426DBF text on black | 4.17:1 | AA large text | Lc -27.2 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CDDAF0
oklch(88.5% 0.033 261)
-
Step 300
300
#ABC1E9
oklch(80.8% 0.062 262.3)
-
Step 400
400
#7FA1DE
oklch(70.8% 0.098 261.7)
-
Step 500
500
#5E88D5
oklch(63.1% 0.126 261.7)
-
Step 600
600 (this color)
#426DBF
oklch(54.5% 0.137 262)
-
Step 700
700
#375EA8
oklch(49.2% 0.127 261.9)
-
Step 800
800
#2E4D88
oklch(42.8% 0.105 262)
-
Step 900
900
#29406D
oklch(37.6% 0.083 262.6)
-
Step 950
950
#182640
oklch(27% 0.052 262)
#426DBF 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) | #4775C2 | 0.023 |
| Deuteranopia (no green cones) | #336ABD | 0.018 |
| Tritanopia (no blue cones) | #00808D | 0.113 |
| Achromatopsia (no color) | #6F6F6F | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #426DBF
#426DBF
oklch(54.5% 0.137 262)
- #906800
#906800
oklch(54.4% 0.112 82)
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 #426DBF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.028
- Windows Blue #3778BF ΔE 0.030
- Mid Blue #276AB3 ΔE 0.032
- Flat Blue #3C73A8 ΔE 0.044
- Nice Blue #107AB0 ΔE 0.054
- Royal Blue #4169E1 ΔE 0.055
- Muted Blue #3B719F ΔE 0.055
- Dark Periwinkle #665FD1 ΔE 0.063
Use #426DBF 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.