#436A91
Closest named color: Denim (#3B638C). oklch(51.2% 0.076 249.5), rgb(67, 106, 145).
Aa
White text reads best on this color (5.66:1).
About this color
#436A91 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 51%, its chroma 0.076 and its hue 250°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.024 away. White text reads best on it, at 5.66:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | moderately saturated (0.076) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.70:1 |
| White text | 5.66:1 |
Values
| HEX | #436A91 |
| RGB | rgb(67, 106, 145) |
| HSL | hsl(210, 37%, 42%) |
| OKLCH | oklch(51.2% 0.076 249.5) |
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 #436A91 | 5.66:1 | AA | Lc -83.5 | Fine for body text |
| Black text on #436A91 | 3.70:1 | AA large text | Lc 25.9 | Dividers and decoration only |
| #436A91 text on white | 5.66:1 | AA | Lc 78.2 | Fine for body text |
| #436A91 text on black | 3.70:1 | AA large text | Lc -23.6 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EBF1
oklch(93.7% 0.01 247.9)
-
Step 200
200
#CFDBE7
oklch(88.6% 0.021 248.1)
-
Step 300
300
#AFC3D8
oklch(80.9% 0.037 249.6)
-
Step 400
400
#85A4C5
oklch(70.7% 0.059 250.3)
-
Step 500
500
#658DB6
oklch(63% 0.076 249.7)
-
Step 600
600
#4C77A2
oklch(55.6% 0.083 249.5)
-
Step 700
700 (this color)
#436A91
oklch(51.2% 0.076 249.5)
-
Step 800
800
#335270
oklch(42.8% 0.062 248.7)
-
Step 900
900
#2D445B
oklch(37.8% 0.049 249.2)
-
Step 950
950
#1A2835
oklch(27% 0.031 247.2)
#436A91 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) | #5A6B93 | 0.029 |
| Deuteranopia (no green cones) | #506390 | 0.024 |
| Tritanopia (no blue cones) | #177377 | 0.067 |
| Achromatopsia (no color) | #676767 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #436A91
#436A91
oklch(51.2% 0.076 249.5)
- #835F33
#835F33
oklch(51.3% 0.076 70.2)
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 #436A91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.024
- Muted Blue #3B719F ΔE 0.026
- Metallic Blue #4F738E ΔE 0.033
- Dusky Blue #475F94 ΔE 0.034
- Dull Blue #49759C ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.039
- Ocean Blue #03719C ΔE 0.040
- Sea Blue #047495 ΔE 0.042
Use #436A91 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.