#3F797E
Closest named color: Deep Aqua (#08787F). oklch(53.9% 0.061 202.8), rgb(63, 121, 126).
Aa
White text reads best on this color (4.94:1).
About this color
#3F797E is a medium-dark, muted teal or cyan. In OKLCH its lightness is 54%, its chroma 0.061 and its hue 203°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.031 away. White text reads best on it, at 4.94:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | muted (0.061) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.24:1 |
| White text | 4.94:1 |
Values
| HEX | #3F797E |
| RGB | rgb(63, 121, 126) |
| HSL | hsl(185, 33%, 37%) |
| OKLCH | oklch(53.9% 0.061 202.8) |
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 #3F797E | 4.94:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #3F797E | 4.24:1 | AA large text | Lc 30.0 | Dividers and decoration only |
| #3F797E text on white | 4.94:1 | AA | Lc 74.1 | Content text, not long reading |
| #3F797E text on black | 4.24:1 | AA large text | Lc -27.6 | 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 600.
-
Step 50
50
#F3F6F6
oklch(97.1% 0.003 197.1)
-
Step 100
100
#E4EBEC
oklch(93.5% 0.008 207.1)
-
Step 200
200
#CEDCDD
oklch(88.4% 0.015 202)
-
Step 300
300
#ADC6C8
oklch(80.8% 0.027 202.5)
-
Step 400
400
#81A9AD
oklch(70.7% 0.044 203.9)
-
Step 500
500
#5F9498
oklch(63.1% 0.057 201.9)
-
Step 600
600 (this color)
#3F797E
oklch(53.9% 0.061 202.8)
-
Step 700
700
#356A6F
oklch(49% 0.057 203.5)
-
Step 800
800
#2D575A
oklch(42.8% 0.047 201.6)
-
Step 900
900
#29474A
oklch(37.6% 0.036 203.9)
-
Step 950
950
#182A2B
oklch(27% 0.024 200.3)
#3F797E 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) | #71757E | 0.061 |
| Deuteranopia (no green cones) | #676D7E | 0.057 |
| Tritanopia (no blue cones) | #1A7D7A | 0.028 |
| Achromatopsia (no color) | #707070 | 0.061 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F797E
#3F797E
oklch(53.9% 0.061 202.8)
- #8F605E
#8F605E
oklch(53.9% 0.062 22)
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 #3F797E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.031
- Teal #008080 ΔE 0.034
- Bluegreen #017A79 ΔE 0.034
- Ocean #017B92 ΔE 0.039
- Metallic Blue #4F738E ΔE 0.040
- Deep Turquoise #017374 ΔE 0.044
- Dark Aquamarine #017371 ΔE 0.046
- Cerulean #457B9D ΔE 0.050
Use #3F797E 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.