#436FA1
Closest named color: Muted Blue (#3B719F). oklch(53.2% 0.093 252.7), rgb(67, 111, 161).
Aa
White text reads best on this color (5.21:1).
About this color
#436FA1 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.093 and its hue 253°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.010 away. White text reads best on it, at 5.21:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.02:1 |
| White text | 5.21:1 |
Values
| HEX | #436FA1 |
| RGB | rgb(67, 111, 161) |
| HSL | hsl(212, 41%, 45%) |
| OKLCH | oklch(53.2% 0.093 252.7) |
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 #436FA1 | 5.21:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #436FA1 | 4.02:1 | AA large text | Lc 28.4 | Dividers and decoration only |
| #436FA1 text on white | 5.21:1 | AA | Lc 75.7 | Fine for body text |
| #436FA1 text on black | 4.02:1 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AEC3DC
oklch(80.9% 0.042 252.9)
-
Step 400
400
#83A4CA
oklch(70.8% 0.067 252.3)
-
Step 500
500
#638DBC
oklch(63.2% 0.085 251.9)
-
Step 600
600 (this color)
#436FA1
oklch(53.2% 0.093 252.7)
-
Step 700
700
#3B6391
oklch(49.1% 0.087 253)
-
Step 800
800
#315175
oklch(42.7% 0.071 252.4)
-
Step 900
900
#2B435F
oklch(37.6% 0.057 253)
-
Step 950
950
#1A2737
oklch(26.9% 0.035 254.1)
#436FA1 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) | #5A72A3 | 0.030 |
| Deuteranopia (no green cones) | #4E68A0 | 0.022 |
| Tritanopia (no blue cones) | #007A81 | 0.079 |
| Achromatopsia (no color) | #6C6C6C | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436FA1
#436FA1
oklch(53.2% 0.093 252.7)
- #8D6327
#8D6327
oklch(53.2% 0.093 72.8)
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 #436FA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.010
- Flat Blue #3C73A8 ΔE 0.014
- Dull Blue #49759C ΔE 0.023
- French Blue #436BAD ΔE 0.025
- Metallic Blue #4F738E ΔE 0.038
- Cerulean #457B9D ΔE 0.038
- Ocean Blue #03719C ΔE 0.039
- Nice Blue #107AB0 ΔE 0.042
Use #436FA1 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.