#337C70
Closest named color: Bluegreen (#017A79). oklch(53.7% 0.075 180.9), rgb(51, 124, 112).
Aa
White text reads best on this color (4.93:1).
About this color
#337C70 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.075 and its hue 181°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.026 away. White text reads best on it, at 4.93:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.075) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.25:1 |
| White text | 4.93:1 |
Values
| HEX | #337C70 |
| RGB | rgb(51, 124, 112) |
| HSL | hsl(170, 42%, 34%) |
| OKLCH | oklch(53.7% 0.075 180.9) |
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 #337C70 | 4.93:1 | AA | Lc -79.4 | Fine for body text |
| Black text on #337C70 | 4.25:1 | AA large text | Lc 30.1 | Non-text elements, placeholder text |
| #337C70 text on white | 4.93:1 | AA | Lc 73.9 | Content text, not long reading |
| #337C70 text on black | 4.25:1 | AA large text | Lc -27.8 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECEA
oklch(93.6% 0.01 181.4)
-
Step 200
200
#CDDDDA
oklch(88.5% 0.018 183.5)
-
Step 300
300
#AAC8C2
oklch(80.9% 0.033 182)
-
Step 400
400
#7BACA2
oklch(70.7% 0.054 180.6)
-
Step 500
500
#57978C
oklch(63% 0.068 181.8)
-
Step 600
600 (this color)
#337C70
oklch(53.7% 0.075 180.9)
-
Step 700
700
#2B6E63
oklch(49.2% 0.07 180.8)
-
Step 800
800
#255951
oklch(42.6% 0.057 182)
-
Step 900
900
#244A43
oklch(37.9% 0.045 180.4)
-
Step 950
950
#162B27
oklch(27% 0.028 180.5)
#337C70 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) | #777570 | 0.080 |
| Deuteranopia (no green cones) | #6C6D71 | 0.076 |
| Tritanopia (no blue cones) | #007E78 | 0.021 |
| Achromatopsia (no color) | #707070 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337C70
#337C70
oklch(53.7% 0.075 180.9)
- #925B6B
#925B6B
oklch(53.7% 0.075 1.1)
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 #337C70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.026
- Teal #008080 ΔE 0.028
- Deep Aqua #08787F ΔE 0.035
- Dark Aquamarine #017371 ΔE 0.040
- Deep Turquoise #017374 ΔE 0.041
- Dark Cyan #008B8B ΔE 0.051
- Ocean #017B92 ΔE 0.056
- Dark Sage #598556 ΔE 0.064
Use #337C70 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.