#3B5970
Closest named color: YInMn Blue (#415A77). oklch(45% 0.052 242.3), rgb(59, 89, 112).
Aa
White text reads best on this color (7.37:1).
About this color
#3B5970 is a medium-dark, muted blue. In OKLCH its lightness is 45%, its chroma 0.052 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.014 away. White text reads best on it, at 7.37:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | muted (0.052) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.84:1 |
| White text | 7.37:1 |
Values
| HEX | #3B5970 |
| RGB | rgb(59, 89, 112) |
| HSL | hsl(206, 31%, 34%) |
| OKLCH | oklch(45% 0.052 242.3) |
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 #3B5970 | 7.37:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #3B5970 | 2.84:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #3B5970 text on white | 7.37:1 | AAA | Lc 85.5 | Fine for body text |
| #3B5970 text on black | 2.84:1 | Fails | Lc -16.5 | 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
#B0C3D3
oklch(80.8% 0.031 243.5)
-
Step 400
400
#87A5BD
oklch(70.8% 0.048 242.5)
-
Step 500
500
#688EAC
oklch(63% 0.062 242.7)
-
Step 600
600
#4F7898
oklch(55.6% 0.068 242.9)
-
Step 700
700
#406582
oklch(49.1% 0.063 243.2)
-
Step 800
800 (this color)
#3B5970
oklch(45% 0.052 242.3)
-
Step 900
900
#2E4455
oklch(37.6% 0.04 242.3)
-
Step 950
950
#1B2832
oklch(27% 0.026 242)
#3B5970 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) | #4F5971 | 0.027 |
| Deuteranopia (no green cones) | #485370 | 0.024 |
| Tritanopia (no blue cones) | #255F61 | 0.042 |
| Achromatopsia (no color) | #565656 | 0.052 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B5970
#3B5970
oklch(45% 0.052 242.3)
- #6A4F37
#6A4F37
oklch(45% 0.051 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 #3B5970, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.014
- Dusty Grape #545775 ΔE 0.036
- Light Navy Blue #2E5A88 ΔE 0.040
- Dusk #4E5481 ΔE 0.044
- Petrol #005F6A ΔE 0.045
- Denim #3B638C ΔE 0.049
- Slate #516572 ΔE 0.049
- Deep Sea Blue #015482 ΔE 0.055
Use #3B5970 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.