#3A577C
Closest named color: YInMn Blue (#415A77). oklch(45.1% 0.07 255), rgb(58, 87, 124).
Aa
White text reads best on this color (7.40:1).
About this color
#3A577C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.070 and its hue 255°. 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 7.40:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #3A577C |
| RGB | rgb(58, 87, 124) |
| HSL | hsl(214, 36%, 36%) |
| OKLCH | oklch(45.1% 0.07 255) |
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 #3A577C | 7.40:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #3A577C | 2.83:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #3A577C text on white | 7.40:1 | AAA | Lc 85.7 | Fine for body text |
| #3A577C text on black | 2.83:1 | Fails | Lc -16.4 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#CFDAE8
oklch(88.4% 0.023 254.4)
-
Step 300
300
#AFC2DB
oklch(80.8% 0.041 255.3)
-
Step 400
400
#85A3CA
oklch(70.7% 0.066 255.2)
-
Step 500
500
#668CBC
oklch(63.1% 0.084 254.7)
-
Step 600
600
#4D75A8
oklch(55.5% 0.092 255)
-
Step 700
700
#3E6290
oklch(49% 0.085 255.1)
-
Step 800
800 (this color)
#3A577C
oklch(45.1% 0.07 255)
-
Step 900
900
#2D435E
oklch(37.7% 0.054 254.1)
-
Step 950
950
#1B2737
oklch(26.9% 0.034 255.8)
#3A577C 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) | #48597E | 0.020 |
| Deuteranopia (no green cones) | #40537B | 0.013 |
| Tritanopia (no blue cones) | #195F64 | 0.061 |
| Achromatopsia (no color) | #555555 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A577C
#3A577C
oklch(45.1% 0.07 255)
- #6C5025
#6C5025
oklch(45.2% 0.07 76)
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 #3A577C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.017
- Light Navy Blue #2E5A88 ΔE 0.022
- Dusk #4E5481 ΔE 0.030
- Denim Blue #3B5B92 ΔE 0.036
- Dusty Grape #545775 ΔE 0.037
- Dusk Blue #26538D ΔE 0.039
- Denim #3B638C ΔE 0.040
- Twilight #4E518B ΔE 0.043
Use #3A577C 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.