#3A587E
Closest named color: YInMn Blue (#415A77). oklch(45.4% 0.072 254.9), rgb(58, 88, 126).
Aa
White text reads best on this color (7.29:1).
About this color
#3A587E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.072 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 7.29:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.87:1 |
| White text | 7.29:1 |
Values
| HEX | #3A587E |
| RGB | rgb(58, 88, 126) |
| HSL | hsl(214, 37%, 36%) |
| OKLCH | oklch(45.4% 0.072 254.9) |
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 #3A587E | 7.29:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #3A587E | 2.87:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #3A587E text on white | 7.29:1 | AAA | Lc 85.3 | Fine for body text |
| #3A587E text on black | 2.87:1 | Fails | Lc -16.8 | 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 800.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EAF2
oklch(93.5% 0.013 255.5)
-
Step 200
200
#CFDAE9
oklch(88.5% 0.024 256.1)
-
Step 300
300
#AFC3DC
oklch(81% 0.042 254.1)
-
Step 400
400
#84A3CB
oklch(70.7% 0.068 255)
-
Step 500
500
#658CBD
oklch(63.1% 0.086 254.6)
-
Step 600
600
#4C75A9
oklch(55.5% 0.094 254.9)
-
Step 700
700
#3D6291
oklch(49% 0.087 255)
-
Step 800
800 (this color)
#3A587E
oklch(45.4% 0.072 254.9)
-
Step 900
900
#2D435F
oklch(37.8% 0.056 254.9)
-
Step 950
950
#1A2738
oklch(26.9% 0.037 255.4)
#3A587E 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 | 0.021 |
| Deuteranopia (no green cones) | #40537D | 0.016 |
| Tritanopia (no blue cones) | #176165 | 0.065 |
| Achromatopsia (no color) | #565656 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A587E
#3A587E
oklch(45.4% 0.072 254.9)
- #6E5024
#6E5024
oklch(45.4% 0.072 74.6)
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 #3A587E, 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 0.019
- Dusk #4E5481 ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.033
- Denim #3B638C ΔE 0.036
- Dusty Grape #545775 ΔE 0.037
- Dusk Blue #26538D ΔE 0.038
- Twilight #4E518B ΔE 0.042
Use #3A587E 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.