#3F7470
Closest named color: Bluegreen (#017A79). oklch(52.1% 0.057 189.3), rgb(63, 116, 112).
Aa
White text reads best on this color (5.32:1).
About this color
#3F7470 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.057 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.033 away. White text reads best on it, at 5.32:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.057) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 3.94:1 |
| White text | 5.32:1 |
Values
| HEX | #3F7470 |
| RGB | rgb(63, 116, 112) |
| HSL | hsl(175, 30%, 35%) |
| OKLCH | oklch(52.1% 0.057 189.3) |
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 #3F7470 | 5.32:1 | AA | Lc -81.7 | Fine for body text |
| Black text on #3F7470 | 3.94:1 | AA large text | Lc 27.7 | Dividers and decoration only |
| #3F7470 text on white | 5.32:1 | AA | Lc 76.4 | Fine for body text |
| #3F7470 text on black | 3.94:1 | AA large text | Lc -25.4 | 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
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CEDDDB
oklch(88.6% 0.016 187.3)
-
Step 300
300
#ADC7C4
oklch(80.9% 0.028 188.2)
-
Step 400
400
#81AAA6
oklch(70.7% 0.045 188.8)
-
Step 500
500
#609590
oklch(63.1% 0.057 188.3)
-
Step 600
600
#457F7B
oklch(55.6% 0.061 189.8)
-
Step 700
700 (this color)
#3F7470
oklch(52.1% 0.057 189.3)
-
Step 800
800
#2E5754
oklch(42.6% 0.047 189.5)
-
Step 900
900
#294846
oklch(37.7% 0.037 190.4)
-
Step 950
950
#192A29
oklch(27% 0.023 191.2)
#3F7470 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) | #6F6F70 | 0.061 |
| Deuteranopia (no green cones) | #666871 | 0.058 |
| Tritanopia (no blue cones) | #277673 | 0.019 |
| Achromatopsia (no color) | #6B6B6B | 0.058 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F7470
#3F7470
oklch(52.1% 0.057 189.3)
- #875C62
#875C62
oklch(52.2% 0.057 10)
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 #3F7470, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.033
- Deep Aqua #08787F ΔE 0.034
- Deep Turquoise #017374 ΔE 0.034
- Dark Aquamarine #017371 ΔE 0.034
- Teal #008080 ΔE 0.042
- Slate #516572 ΔE 0.050
- Dark Aqua #05696B ΔE 0.054
- Metallic Blue #4F738E ΔE 0.054
Use #3F7470 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.