#436F97
Closest named color: Muted Blue (#3B719F). oklch(52.7% 0.08 247.3), rgb(67, 111, 151).
Aa
White text reads best on this color (5.30:1).
About this color
#436F97 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.080 and its hue 247°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.014 away. White text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 3.95:1 |
| White text | 5.30:1 |
Values
| HEX | #436F97 |
| RGB | rgb(67, 111, 151) |
| HSL | hsl(209, 39%, 43%) |
| OKLCH | oklch(52.7% 0.08 247.3) |
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 #436F97 | 5.30:1 | AA | Lc -81.6 | Fine for body text |
| Black text on #436F97 | 3.95:1 | AA large text | Lc 27.8 | Dividers and decoration only |
| #436F97 text on white | 5.30:1 | AA | Lc 76.3 | Fine for body text |
| #436F97 text on black | 3.95:1 | AA large text | Lc -25.5 | 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
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#CFDBE6
oklch(88.6% 0.02 245.7)
-
Step 300
300
#AFC3D7
oklch(80.8% 0.036 248.3)
-
Step 400
400
#84A4C3
oklch(70.6% 0.058 247.8)
-
Step 500
500
#658EB4
oklch(63.2% 0.073 247.2)
-
Step 600
600 (this color)
#436F97
oklch(52.7% 0.08 247.3)
-
Step 700
700
#3C6489
oklch(49% 0.075 247.8)
-
Step 800
800
#32526F
oklch(42.7% 0.061 247.1)
-
Step 900
900
#2C445A
oklch(37.7% 0.048 247.1)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#436F97 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) | #5E7099 | 0.033 |
| Deuteranopia (no green cones) | #536896 | 0.025 |
| Tritanopia (no blue cones) | #0A787D | 0.067 |
| Achromatopsia (no color) | #6B6B6B | 0.080 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436F97
#436F97
oklch(52.7% 0.08 247.3)
- #8A6235
#8A6235
oklch(52.8% 0.08 67.8)
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 #436F97, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.014
- Dull Blue #49759C ΔE 0.020
- Metallic Blue #4F738E ΔE 0.025
- Flat Blue #3C73A8 ΔE 0.027
- Cerulean #457B9D ΔE 0.035
- Ocean Blue #03719C ΔE 0.036
- Sea Blue #047495 ΔE 0.038
- Denim #3B638C ΔE 0.039
Use #436F97 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.