#436ABB
Closest named color: French Blue (#436BAD). oklch(53.6% 0.135 263.2), rgb(67, 106, 187).
Aa
White text reads best on this color (5.22:1).
About this color
#436ABB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.135 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.023 away. White text reads best on it, at 5.22:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 4.01:1 |
| White text | 5.22:1 |
Values
| HEX | #436ABB |
| RGB | rgb(67, 106, 187) |
| HSL | hsl(220, 47%, 50%) |
| OKLCH | oklch(53.6% 0.135 263.2) |
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 #436ABB | 5.22:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #436ABB | 4.01:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #436ABB text on white | 5.22:1 | AA | Lc 75.7 | Fine for body text |
| #436ABB text on black | 4.01:1 | AA large text | Lc -26.0 | 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
#F3F6FB
oklch(97.2% 0.007 260.7)
-
Step 100
100
#E4EAF6
oklch(93.6% 0.017 264.5)
-
Step 200
200
#CEDAF0
oklch(88.6% 0.033 262.7)
-
Step 300
300
#ACC1E9
oklch(80.9% 0.061 263.2)
-
Step 400
400
#81A0DD
oklch(70.6% 0.096 263.4)
-
Step 500
500
#6187D4
oklch(63% 0.124 263.3)
-
Step 600
600 (this color)
#436ABB
oklch(53.6% 0.135 263.2)
-
Step 700
700
#3A5DA7
oklch(49.1% 0.125 263.4)
-
Step 800
800
#304C87
oklch(42.6% 0.104 263.5)
-
Step 900
900
#2A406C
oklch(37.6% 0.081 263)
-
Step 950
950
#19263F
oklch(27% 0.05 262.6)
#436ABB 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) | #4472BE | 0.022 |
| Deuteranopia (no green cones) | #3267B9 | 0.020 |
| Tritanopia (no blue cones) | #007C89 | 0.112 |
| Achromatopsia (no color) | #6C6C6C | 0.135 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436ABB
#436ABB
oklch(53.6% 0.135 263.2)
- #8C6700
#8C6700
oklch(53.7% 0.11 83.8)
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 #436ABB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.023
- Mid Blue #276AB3 ΔE 0.028
- Windows Blue #3778BF ΔE 0.038
- Flat Blue #3C73A8 ΔE 0.044
- Muted Blue #3B719F ΔE 0.053
- Nice Blue #107AB0 ΔE 0.057
- Royal Blue #4169E1 ΔE 0.059
- Iris #6258C4 ΔE 0.060
Use #436ABB 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.