#3B697F
Closest named color: Slate (#516572). oklch(49.7% 0.062 230.5), rgb(59, 105, 127).
Aa
White text reads best on this color (5.97:1).
About this color
#3B697F is a medium-dark, muted blue. In OKLCH its lightness is 50%, its chroma 0.062 and its hue 230°. Its hue sits on the cool side of the wheel. The nearest named color is Slate (#516572), ΔE 0.030 away. White text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-dark (50%) |
| Chroma | muted (0.062) |
| Temperature | cool |
| Nearest name | Slate (#516572) |
| Black text | 3.51:1 |
| White text | 5.97:1 |
Values
| HEX | #3B697F |
| RGB | rgb(59, 105, 127) |
| HSL | hsl(199, 37%, 36%) |
| OKLCH | oklch(49.7% 0.062 230.5) |
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 #3B697F | 5.97:1 | AA | Lc -85.0 | Fine for body text |
| Black text on #3B697F | 3.51:1 | AA large text | Lc 24.3 | Dividers and decoration only |
| #3B697F text on white | 5.97:1 | AA | Lc 79.8 | Fine for body text |
| #3B697F text on black | 3.51:1 | AA large text | Lc -22.1 | 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
#F3F6F8
oklch(97.1% 0.004 236.5)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CFDBE2
oklch(88.4% 0.016 233)
-
Step 300
300
#AEC5D0
oklch(81% 0.029 228.2)
-
Step 400
400
#83A7B9
oklch(70.8% 0.047 229.9)
-
Step 500
500
#6291A8
oklch(63.2% 0.061 230.1)
-
Step 600
600
#487B93
oklch(55.7% 0.066 229.9)
-
Step 700
700 (this color)
#3B697F
oklch(49.7% 0.062 230.5)
-
Step 800
800
#305466
oklch(42.7% 0.051 231.4)
-
Step 900
900
#2B4653
oklch(37.8% 0.04 229.9)
-
Step 950
950
#192930
oklch(27% 0.025 227.2)
#3B697F 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) | #5E6880 | 0.043 |
| Deuteranopia (no green cones) | #54607F | 0.038 |
| Tritanopia (no blue cones) | #126F70 | 0.045 |
| Achromatopsia (no color) | #636363 | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B697F
#3B697F
oklch(49.7% 0.062 230.5)
- #7F5842
#7F5842
oklch(49.7% 0.062 50.3)
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 #3B697F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.030
- Denim #3B638C ΔE 0.032
- Metallic Blue #4F738E ΔE 0.044
- YInMn Blue #415A77 ΔE 0.044
- Sea Blue #047495 ΔE 0.045
- Peacock Blue #016795 ΔE 0.048
- Deep Turquoise #017374 ΔE 0.050
- Dark Aqua #05696B ΔE 0.050
Use #3B697F 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.