#436AA4
Closest named color: French Blue (#436BAD). oklch(52.3% 0.102 258.1), rgb(67, 106, 164).
Aa
White text reads best on this color (5.47:1).
About this color
#436AA4 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.102 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.014 away. White text reads best on it, at 5.47:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.83:1 |
| White text | 5.47:1 |
Values
| HEX | #436AA4 |
| RGB | rgb(67, 106, 164) |
| HSL | hsl(216, 42%, 45%) |
| OKLCH | oklch(52.3% 0.102 258.1) |
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 #436AA4 | 5.47:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #436AA4 | 3.83:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #436AA4 text on white | 5.47:1 | AA | Lc 77.2 | Fine for body text |
| #436AA4 text on black | 3.83:1 | AA large text | Lc -24.6 | 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 700.
-
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
#CEDAEC
oklch(88.5% 0.028 258.4)
-
Step 300
300
#ADC2E1
oklch(80.8% 0.05 258)
-
Step 400
400
#82A2D2
oklch(70.6% 0.079 258.3)
-
Step 500
500
#628BC6
oklch(63.2% 0.1 257.5)
-
Step 600
600
#4974B3
oklch(55.7% 0.11 257.9)
-
Step 700
700 (this color)
#436AA4
oklch(52.3% 0.102 258.1)
-
Step 800
800
#304F7D
oklch(42.6% 0.085 258.1)
-
Step 900
900
#2B4264
oklch(37.7% 0.065 258)
-
Step 950
950
#19273B
oklch(27% 0.042 257.3)
#436AA4 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) | #526EA6 | 0.022 |
| Deuteranopia (no green cones) | #4565A3 | 0.014 |
| Tritanopia (no blue cones) | #00777F | 0.089 |
| Achromatopsia (no color) | #696969 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436AA4
#436AA4
oklch(52.3% 0.102 258.1)
- #8A6112
#8A6112
oklch(52.3% 0.103 77.7)
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 #436AA4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.014
- Muted Blue #3B719F ΔE 0.024
- Flat Blue #3C73A8 ΔE 0.025
- Mid Blue #276AB3 ΔE 0.033
- Dusky Blue #475F94 ΔE 0.036
- Dull Blue #49759C ΔE 0.039
- Denim #3B638C ΔE 0.042
- Ocean Blue #03719C ΔE 0.044
Use #436AA4 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.