#436AA5
Closest named color: French Blue (#436BAD). oklch(52.3% 0.104 258.4), rgb(67, 106, 165).
Aa
White text reads best on this color (5.46:1).
About this color
#436AA5 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 52%, its chroma 0.104 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is French Blue (#436BAD), ΔE 0.013 away. White text reads best on it, at 5.46:1.
| Hue family | Blues |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | French Blue (#436BAD) |
| Black text | 3.84:1 |
| White text | 5.46:1 |
Values
| HEX | #436AA5 |
| RGB | rgb(67, 106, 165) |
| HSL | hsl(216, 42%, 45%) |
| OKLCH | oklch(52.3% 0.104 258.4) |
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 #436AA5 | 5.46:1 | AA | Lc -82.4 | Fine for body text |
| Black text on #436AA5 | 3.84:1 | AA large text | Lc 27.0 | Dividers and decoration only |
| #436AA5 text on white | 5.46:1 | AA | Lc 77.1 | Fine for body text |
| #436AA5 text on black | 3.84:1 | AA large text | Lc -24.7 | 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
#ADC2E2
oklch(80.9% 0.051 258.7)
-
Step 400
400
#82A2D3
oklch(70.7% 0.081 258.7)
-
Step 500
500
#628AC7
oklch(63% 0.103 258.6)
-
Step 600
600
#4973B4
oklch(55.5% 0.112 258.8)
-
Step 700
700 (this color)
#436AA5
oklch(52.3% 0.104 258.4)
-
Step 800
800
#304F7E
oklch(42.7% 0.087 258.5)
-
Step 900
900
#2B4265
oklch(37.7% 0.067 258.5)
-
Step 950
950
#19273B
oklch(27% 0.042 257.3)
#436AA5 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) | #516EA7 | 0.021 |
| Deuteranopia (no green cones) | #4565A4 | 0.014 |
| Tritanopia (no blue cones) | #007780 | 0.089 |
| Achromatopsia (no color) | #696969 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436AA5
#436AA5
oklch(52.3% 0.104 258.4)
- #8A610F
#8A610F
oklch(52.3% 0.104 78.2)
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 #436AA5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- French Blue #436BAD ΔE 0.013
- Muted Blue #3B719F ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.025
- Mid Blue #276AB3 ΔE 0.031
- Dusky Blue #475F94 ΔE 0.037
- Dull Blue #49759C ΔE 0.040
- Denim #3B638C ΔE 0.044
- Ocean Blue #03719C ΔE 0.045
Use #436AA5 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.