#43577E
Closest named color: YInMn Blue (#415A77). oklch(45.8% 0.069 263.1), rgb(67, 87, 126).
Aa
White text reads best on this color (7.23:1).
About this color
#43577E is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.069 and its hue 263°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.017 away. White text reads best on it, at 7.23:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.90:1 |
| White text | 7.23:1 |
Values
| HEX | #43577E |
| RGB | rgb(67, 87, 126) |
| HSL | hsl(220, 31%, 38%) |
| OKLCH | oklch(45.8% 0.069 263.1) |
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 #43577E | 7.23:1 | AAA | Lc -89.9 | Fine for body text |
| Black text on #43577E | 2.90:1 | Fails | Lc 19.0 | Dividers and decoration only |
| #43577E text on white | 7.23:1 | AAA | Lc 85.1 | Fine for body text |
| #43577E 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
#D1D9E8
oklch(88.4% 0.022 263.2)
-
Step 300
300
#B3C1DB
oklch(80.9% 0.04 262.9)
-
Step 400
400
#8CA1C9
oklch(70.7% 0.063 263.1)
-
Step 500
500
#6F89BC
oklch(63% 0.083 263.4)
-
Step 600
600
#5773A8
oklch(55.7% 0.089 262.5)
-
Step 700
700
#486090
oklch(49.1% 0.083 263.4)
-
Step 800
800 (this color)
#43577E
oklch(45.8% 0.069 263.1)
-
Step 900
900
#32415E
oklch(37.6% 0.054 263)
-
Step 950
950
#1E2637
oklch(26.9% 0.034 264.8)
#43577E 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) | #495A80 | 0.013 |
| Deuteranopia (no green cones) | #42547D | 0.009 |
| Tritanopia (no blue cones) | #2D5F65 | 0.061 |
| Achromatopsia (no color) | #575757 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #43577E
#43577E
oklch(45.8% 0.069 263.1)
- #6A5427
#6A5427
oklch(45.8% 0.069 83.4)
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 #43577E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.017
- Dusk #4E5481 ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.027
- Dusty Grape #545775 ΔE 0.028
- Denim Blue #3B5B92 ΔE 0.033
- Twilight #4E518B ΔE 0.034
- Denim #3B638C ΔE 0.037
- Dusky Blue #475F94 ΔE 0.040
Use #43577E 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.