#3F6763
Closest named color: Dark Aqua (#05696B). oklch(48.3% 0.046 187.7), rgb(63, 103, 99).
Aa
White text reads best on this color (6.30:1).
About this color
#3F6763 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 48%, its chroma 0.046 and its hue 188°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Aqua (#05696B), ΔE 0.036 away. White text reads best on it, at 6.30:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.046) |
| Temperature | cool |
| Nearest name | Dark Aqua (#05696B) |
| Black text | 3.33:1 |
| White text | 6.30:1 |
Values
| HEX | #3F6763 |
| RGB | rgb(63, 103, 99) |
| HSL | hsl(174, 24%, 33%) |
| OKLCH | oklch(48.3% 0.046 187.7) |
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 #3F6763 | 6.30:1 | AA | Lc -86.4 | Fine for body text |
| Black text on #3F6763 | 3.33:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #3F6763 text on white | 6.30:1 | AA | Lc 81.3 | Fine for body text |
| #3F6763 text on black | 3.33:1 | AA large text | Lc -20.6 | 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
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E5EBEA
oklch(93.5% 0.007 185.3)
-
Step 200
200
#D1DCDA
oklch(88.6% 0.012 184)
-
Step 300
300
#B1C5C3
oklch(80.8% 0.022 189.5)
-
Step 400
400
#88A8A4
oklch(70.6% 0.036 187.1)
-
Step 500
500
#6A938E
oklch(63.2% 0.046 186.7)
-
Step 600
600
#517D78
oklch(55.6% 0.049 186.9)
-
Step 700
700 (this color)
#3F6763
oklch(48.3% 0.046 187.7)
-
Step 800
800
#365653
oklch(42.7% 0.038 188.4)
-
Step 900
900
#2F4744
oklch(37.7% 0.03 186.3)
-
Step 950
950
#1C2928
oklch(26.9% 0.018 190.2)
#3F6763 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) | #636363 | 0.049 |
| Deuteranopia (no green cones) | #5C5E64 | 0.046 |
| Tritanopia (no blue cones) | #306966 | 0.015 |
| Achromatopsia (no color) | #606060 | 0.046 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F6763
#3F6763
oklch(48.3% 0.046 187.7)
- #76545A
#76545A
oklch(48.4% 0.046 7.2)
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 #3F6763, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Aqua #05696B ΔE 0.036
- Slate #516572 ΔE 0.037
- Dark Green Blue #1F6357 ΔE 0.039
- Dark Aquamarine #017371 ΔE 0.045
- Deep Turquoise #017374 ΔE 0.046
- Petrol #005F6A ΔE 0.054
- Deep Aqua #08787F ΔE 0.059
- Dim Gray #696969 ΔE 0.059
Use #3F6763 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.