#43578E
Closest named color: Denim Blue (#3B5B92). oklch(46.7% 0.093 267.6), rgb(67, 87, 142).
Aa
White text reads best on this color (7.01:1).
About this color
#43578E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.093 and its hue 268°. Its hue sits on the cool side of the wheel. The nearest named color is Denim Blue (#3B5B92), ΔE 0.014 away. White text reads best on it, at 7.01:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Denim Blue (#3B5B92) |
| Black text | 2.99:1 |
| White text | 7.01:1 |
Values
| HEX | #43578E |
| RGB | rgb(67, 87, 142) |
| HSL | hsl(224, 36%, 41%) |
| OKLCH | oklch(46.7% 0.093 267.6) |
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 #43578E | 7.01:1 | AAA | Lc -89.1 | Fine for body text |
| Black text on #43578E | 2.99:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #43578E text on white | 7.01:1 | AAA | Lc 84.2 | Fine for body text |
| #43578E text on black | 2.99:1 | Fails | Lc -17.8 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E6EAF3
oklch(93.7% 0.013 266.7)
-
Step 200
200
#D2D9EA
oklch(88.5% 0.025 267.9)
-
Step 300
300
#B4C0DF
oklch(80.9% 0.046 268.6)
-
Step 400
400
#8DA0CE
oklch(70.8% 0.071 267.1)
-
Step 500
500
#7187C2
oklch(63% 0.093 268)
-
Step 600
600
#5A70AE
oklch(55.5% 0.1 268.2)
-
Step 700
700 (this color)
#43578E
oklch(46.7% 0.093 267.6)
-
Step 800
800
#3C4D79
oklch(42.7% 0.077 267.1)
-
Step 900
900
#344062
oklch(37.7% 0.061 268.6)
-
Step 950
950
#1E2639
oklch(27% 0.037 266.4)
#43578E 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) | #415C90 | 0.014 |
| Deuteranopia (no green cones) | #39568D | 0.013 |
| Tritanopia (no blue cones) | #20636B | 0.085 |
| Achromatopsia (no color) | #595959 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43578E
#43578E
oklch(46.7% 0.093 267.6)
- #705606
#705606
oklch(46.7% 0.093 87.6)
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 #43578E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim Blue #3B5B92 ΔE 0.014
- Twilight #4E518B ΔE 0.021
- Dusk #4E5481 ΔE 0.025
- Dusky Blue #475F94 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.027
- Dusk Blue #26538D ΔE 0.036
- Denim #3B638C ΔE 0.036
- YInMn Blue #415A77 ΔE 0.042
Use #43578E 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.