#436BAF
Closest named color: French Blue (#436BAD). oklch(53.1% 0.117 260.4), rgb(67, 107, 175).
Aa
White text reads best on this color (5.30:1).
About this color
#436BAF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.117 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.003 away. White text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.96:1 |
| White text | 5.30:1 |
Values
| HEX | #436BAF |
| RGB | rgb(67, 107, 175) |
| HSL | hsl(218, 45%, 47%) |
| OKLCH | oklch(53.1% 0.117 260.4) |
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 #436BAF | 5.30:1 | AA | Lc -81.5 | Fine for body text |
| Black text on #436BAF | 3.96:1 | AA large text | Lc 27.9 | Dividers and decoration only |
| #436BAF text on white | 5.30:1 | AA | Lc 76.2 | Fine for body text |
| #436BAF text on black | 3.96:1 | AA large text | Lc -25.6 | 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
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CEDAED
oklch(88.5% 0.029 259.6)
-
Step 300
300
#ADC2E3
oklch(80.9% 0.052 259.4)
-
Step 400
400
#82A2D5
oklch(70.8% 0.083 259.6)
-
Step 500
500
#638ACA
oklch(63.2% 0.106 260)
-
Step 600
600 (this color)
#436BAF
oklch(53.1% 0.117 260.4)
-
Step 700
700
#3B609E
oklch(49.2% 0.109 260.2)
-
Step 800
800
#314E80
oklch(42.6% 0.091 260.7)
-
Step 900
900
#2B4167
oklch(37.6% 0.071 260.8)
-
Step 950
950
#1A263C
oklch(26.9% 0.045 261.9)
#436BAF 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) | #4E71B2 | 0.022 |
| Deuteranopia (no green cones) | #3F67AE | 0.013 |
| Tritanopia (no blue cones) | #007A84 | 0.099 |
| Achromatopsia (no color) | #6B6B6B | 0.117 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436BAF
#436BAF
oklch(53.1% 0.117 260.4)
- #8D6400
#8D6400
oklch(53.2% 0.11 80.4)
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 #436BAF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.003
- Mid Blue #276AB3 ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.028
- Muted Blue #3B719F ΔE 0.035
- Windows Blue #3778BF ΔE 0.039
- Dull Blue #49759C ΔE 0.047
- Nice Blue #107AB0 ΔE 0.048
- Dusky Blue #475F94 ΔE 0.049
Use #436BAF 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.