#337C6B
Closest named color: Bluegreen (#017A79). oklch(53.5% 0.078 175.5), rgb(51, 124, 107).
Aa
White text reads best on this color (4.95:1).
About this color
#337C6B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.078 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.031 away. White text reads best on it, at 4.95:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.23:1 |
| White text | 4.95:1 |
Values
| HEX | #337C6B |
| RGB | rgb(51, 124, 107) |
| HSL | hsl(166, 42%, 34%) |
| OKLCH | oklch(53.5% 0.078 175.5) |
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 #337C6B | 4.95:1 | AA | Lc -79.5 | Fine for body text |
| Black text on #337C6B | 4.23:1 | AA large text | Lc 30.0 | Dividers and decoration only |
| #337C6B text on white | 4.95:1 | AA | Lc 74.1 | Content text, not long reading |
| #337C6B text on black | 4.23:1 | 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
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CDDED8
oklch(88.6% 0.02 172.7)
-
Step 300
300
#AAC8BF
oklch(80.8% 0.035 175.4)
-
Step 400
400
#7BAC9F
oklch(70.6% 0.056 176.4)
-
Step 500
500
#579887
oklch(63.1% 0.072 175.1)
-
Step 600
600 (this color)
#337C6B
oklch(53.5% 0.078 175.5)
-
Step 700
700
#2B6E5F
oklch(49.1% 0.072 176)
-
Step 800
800
#255A4D
oklch(42.8% 0.061 174.8)
-
Step 900
900
#244A40
oklch(37.8% 0.047 174.5)
-
Step 950
950
#162B26
oklch(27% 0.029 177.1)
#337C6B 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) | #78756A | 0.082 |
| Deuteranopia (no green cones) | #6D6D6C | 0.077 |
| Tritanopia (no blue cones) | #007D77 | 0.025 |
| Achromatopsia (no color) | #707070 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337C6B
#337C6B
oklch(53.5% 0.078 175.5)
- #915A6F
#915A6F
oklch(53.5% 0.077 355.6)
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 #337C6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.031
- Teal #008080 ΔE 0.033
- Deep Aqua #08787F ΔE 0.041
- Dark Aquamarine #017371 ΔE 0.042
- Deep Turquoise #017374 ΔE 0.044
- Dark Cyan #008B8B ΔE 0.055
- Dark Sage #598556 ΔE 0.059
- Sea Green #2E8B57 ΔE 0.063
Use #337C6B 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.