#43577F
Closest named color: Dusk (#4E5481). oklch(45.8% 0.07 263.5), rgb(67, 87, 127).
Aa
White text reads best on this color (7.22:1).
About this color
#43577F is a medium-dark, moderately saturated blue. In OKLCH its lightness is 46%, its chroma 0.070 and its hue 264°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.018 away. White text reads best on it, at 7.22:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.90:1 |
| White text | 7.22:1 |
Values
| HEX | #43577F |
| RGB | rgb(67, 87, 127) |
| HSL | hsl(220, 31%, 38%) |
| OKLCH | oklch(45.8% 0.07 263.5) |
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 #43577F | 7.22:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #43577F | 2.90:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #43577F text on white | 7.22:1 | AAA | Lc 85.0 | Fine for body text |
| #43577F text on black | 2.90:1 | Fails | Lc -17.0 | 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 800.
-
Step 50
50
#F3F5F9
oklch(97% 0.006 264.5)
-
Step 100
100
#E6EAF2
oklch(93.6% 0.012 264.5)
-
Step 200
200
#D1D9E9
oklch(88.4% 0.024 264.4)
-
Step 300
300
#B3C1DC
oklch(80.9% 0.041 263.6)
-
Step 400
400
#8BA1CA
oklch(70.7% 0.065 262.7)
-
Step 500
500
#6F89BD
oklch(63.1% 0.084 263.7)
-
Step 600
600
#5772A9
oklch(55.5% 0.092 263.7)
-
Step 700
700
#476091
oklch(49.1% 0.085 263)
-
Step 800
800 (this color)
#43577F
oklch(45.8% 0.07 263.5)
-
Step 900
900
#32415F
oklch(37.6% 0.055 263.6)
-
Step 950
950
#1E2638
oklch(27% 0.036 265.6)
#43577F 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) | #485A81 | 0.012 |
| Deuteranopia (no green cones) | #42557E | 0.006 |
| Tritanopia (no blue cones) | #2C5F65 | 0.062 |
| Achromatopsia (no color) | #575757 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43577F
#43577F
oklch(45.8% 0.07 263.5)
- #6A5425
#6A5425
oklch(45.8% 0.071 84.2)
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 #43577F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.018
- YInMn Blue #415A77 ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.026
- Dusty Grape #545775 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.031
- Twilight #4E518B ΔE 0.033
- Denim #3B638C ΔE 0.037
- Dusky Blue #475F94 ΔE 0.038
Use #43577F 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.