#3A5870
Closest named color: YInMn Blue (#415A77). oklch(44.7% 0.053 243.5), rgb(58, 88, 112).
Aa
White text reads best on this color (7.47:1).
About this color
#3A5870 is a dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.053 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.016 away. White text reads best on it, at 7.47:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | muted (0.053) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.80:1 |
| White text | 7.47:1 |
Values
| HEX | #3A5870 |
| RGB | rgb(58, 88, 112) |
| HSL | hsl(207, 32%, 33%) |
| OKLCH | oklch(44.7% 0.053 243.5) |
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 #3A5870 | 7.47:1 | AAA | Lc -90.7 | Preferred for body text |
| Black text on #3A5870 | 2.80:1 | Fails | Lc 18.1 | Dividers and decoration only |
| #3A5870 text on white | 7.47:1 | AAA | Lc 85.9 | Fine for body text |
| #3A5870 text on black | 2.80:1 | Fails | Lc -16.1 | 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 800.
-
Step 50
50
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E5EBEF
oklch(93.7% 0.008 236.6)
-
Step 200
200
#D0DBE4
oklch(88.6% 0.017 242.5)
-
Step 300
300
#B0C3D4
oklch(80.8% 0.032 245.2)
-
Step 400
400
#86A5BE
oklch(70.7% 0.05 242.8)
-
Step 500
500
#688EAD
oklch(63% 0.063 243.6)
-
Step 600
600
#4F7899
oklch(55.6% 0.069 243.7)
-
Step 700
700
#3F6583
oklch(49.1% 0.065 243.5)
-
Step 800
800 (this color)
#3A5870
oklch(44.7% 0.053 243.5)
-
Step 900
900
#2E4456
oklch(37.6% 0.041 243.9)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#3A5870 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) | #4E5871 | 0.027 |
| Deuteranopia (no green cones) | #475270 | 0.024 |
| Tritanopia (no blue cones) | #235E60 | 0.044 |
| Achromatopsia (no color) | #555555 | 0.053 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3A5870
#3A5870
oklch(44.7% 0.053 243.5)
- #6A4E35
#6A4E35
oklch(44.7% 0.053 62.6)
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 #3A5870, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.016
- Dusty Grape #545775 ΔE 0.037
- Light Navy Blue #2E5A88 ΔE 0.040
- Dusk #4E5481 ΔE 0.044
- Petrol #005F6A ΔE 0.045
- Denim #3B638C ΔE 0.050
- Deep Sea Blue #015482 ΔE 0.053
- Slate #516572 ΔE 0.053
Use #3A5870 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.