#426BA4
Closest named color: French Blue (#436BAD). oklch(52.4% 0.102 256.9), rgb(66, 107, 164).
Aa
White text reads best on this color (5.42:1).
About this color
#426BA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.102 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.015 away. White text reads best on it, at 5.42:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.87:1 |
| White text | 5.42:1 |
Values
| HEX | #426BA4 |
| RGB | rgb(66, 107, 164) |
| HSL | hsl(215, 43%, 45%) |
| OKLCH | oklch(52.4% 0.102 256.9) |
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 #426BA4 | 5.42:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #426BA4 | 3.87:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #426BA4 text on white | 5.42:1 | AA | Lc 76.9 | Fine for body text |
| #426BA4 text on black | 3.87:1 | AA large text | Lc -24.9 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E4EAF3
oklch(93.5% 0.014 258.3)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AEC2DF
oklch(80.8% 0.047 257.6)
-
Step 400
400
#83A3CE
oklch(70.7% 0.073 255.9)
-
Step 500
500
#648BC2
oklch(63.1% 0.094 257)
-
Step 600
600 (this color)
#426BA4
oklch(52.4% 0.102 256.9)
-
Step 700
700
#3C6196
oklch(49% 0.096 257.4)
-
Step 800
800
#325079
oklch(42.8% 0.077 256.5)
-
Step 900
900
#2C4262
oklch(37.6% 0.062 257.7)
-
Step 950
950
#1A2739
oklch(27% 0.038 256.7)
#426BA4 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) | #536FA6 | 0.024 |
| Deuteranopia (no green cones) | #4666A3 | 0.014 |
| Tritanopia (no blue cones) | #007880 | 0.087 |
| Achromatopsia (no color) | #6A6A6A | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #426BA4
#426BA4
oklch(52.4% 0.102 256.9)
- #8B6115
#8B6115
oklch(52.4% 0.102 76.6)
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 #426BA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.015
- Muted Blue #3B719F ΔE 0.021
- Flat Blue #3C73A8 ΔE 0.022
- Mid Blue #276AB3 ΔE 0.033
- Dull Blue #49759C ΔE 0.036
- Dusky Blue #475F94 ΔE 0.038
- Ocean Blue #03719C ΔE 0.042
- Denim #3B638C ΔE 0.043
Use #426BA4 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.