#45577E
Closest named color: Dusk (#4E5481). oklch(45.9% 0.068 264.9), rgb(69, 87, 126).
Aa
White text reads best on this color (7.19:1).
About this color
#45577E is a medium-dark, muted blue. In OKLCH its lightness is 46%, its chroma 0.068 and its hue 265°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.016 away. White text reads best on it, at 7.19:1.
| Hue family | Blues |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.91:1 |
| White text | 7.19:1 |
Values
| HEX | #45577E |
| RGB | rgb(69, 87, 126) |
| HSL | hsl(221, 29%, 38%) |
| OKLCH | oklch(45.9% 0.068 264.9) |
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 #45577E | 7.19:1 | AAA | Lc -89.8 | Fine for body text |
| Black text on #45577E | 2.91:1 | Fails | Lc 19.1 | Dividers and decoration only |
| #45577E text on white | 7.19:1 | AAA | Lc 84.9 | Fine for body text |
| #45577E text on black | 2.91:1 | Fails | Lc -17.1 | 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
#F4F5F8
oklch(97% 0.004 271.4)
-
Step 100
100
#E7EAF0
oklch(93.6% 0.009 264.5)
-
Step 200
200
#D3D9E6
oklch(88.5% 0.019 266)
-
Step 300
300
#B6C1D7
oklch(80.9% 0.033 264.4)
-
Step 400
400
#91A1C2
oklch(70.8% 0.052 264.7)
-
Step 500
500
#7589B3
oklch(63% 0.068 264.8)
-
Step 600
600
#5E739F
oklch(55.7% 0.073 264.5)
-
Step 700
700 (this color)
#45577E
oklch(45.9% 0.068 264.9)
-
Step 800
800
#404F6E
oklch(42.8% 0.055 264.3)
-
Step 900
900
#364159
oklch(37.6% 0.044 265.3)
-
Step 950
950
#202634
oklch(26.9% 0.028 266.5)
#45577E 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 | 0.011 |
| Deuteranopia (no green cones) | #43557D | 0.007 |
| Tritanopia (no blue cones) | #305F65 | 0.060 |
| Achromatopsia (no color) | #575757 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #45577E
#45577E
oklch(45.9% 0.068 264.9)
- #695528
#695528
oklch(46% 0.068 85.6)
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 #45577E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.016
- YInMn Blue #415A77 ΔE 0.017
- Dusty Grape #545775 ΔE 0.025
- Light Navy Blue #2E5A88 ΔE 0.029
- Twilight #4E518B ΔE 0.033
- Denim Blue #3B5B92 ΔE 0.033
- Denim #3B638C ΔE 0.037
- Dusky Blue #475F94 ΔE 0.039
Use #45577E 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.