#337770
Closest named color: Bluegreen (#017A79). oklch(52.4% 0.07 186.2), rgb(51, 119, 112).
Aa
White text reads best on this color (5.23:1).
About this color
#337770 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.070 and its hue 186°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.022 away. White text reads best on it, at 5.23:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.070) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 4.01:1 |
| White text | 5.23:1 |
Values
| HEX | #337770 |
| RGB | rgb(51, 119, 112) |
| HSL | hsl(174, 40%, 33%) |
| OKLCH | oklch(52.4% 0.07 186.2) |
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 #337770 | 5.23:1 | AA | Lc -81.1 | Fine for body text |
| Black text on #337770 | 4.01:1 | AA large text | Lc 28.3 | Dividers and decoration only |
| #337770 text on white | 5.23:1 | AA | Lc 75.8 | Fine for body text |
| #337770 text on black | 4.01:1 | AA large text | Lc -26.0 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E4ECEB
oklch(93.7% 0.009 188.1)
-
Step 200
200
#CDDDDB
oklch(88.5% 0.017 187.8)
-
Step 300
300
#ABC8C4
oklch(81% 0.032 186.4)
-
Step 400
400
#7DABA5
oklch(70.6% 0.05 186.1)
-
Step 500
500
#5A968F
oklch(63% 0.064 186.2)
-
Step 600
600 (this color)
#337770
oklch(52.4% 0.07 186.2)
-
Step 700
700
#2F6D66
oklch(49.2% 0.065 185.4)
-
Step 800
800
#285953
oklch(42.8% 0.054 184.9)
-
Step 900
900
#264945
oklch(37.8% 0.041 186.1)
-
Step 950
950
#172B28
oklch(27.1% 0.027 183.8)
#337770 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) | #717170 | 0.074 |
| Deuteranopia (no green cones) | #666971 | 0.069 |
| Tritanopia (no blue cones) | #007A75 | 0.021 |
| Achromatopsia (no color) | #6C6C6C | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337770
#337770
oklch(52.4% 0.07 186.2)
- #8C5964
#8C5964
oklch(52.3% 0.069 5.7)
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 #337770, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.022
- Deep Aqua #08787F ΔE 0.028
- Dark Aquamarine #017371 ΔE 0.028
- Deep Turquoise #017374 ΔE 0.029
- Teal #008080 ΔE 0.033
- Ocean #017B92 ΔE 0.053
- Dark Aqua #05696B ΔE 0.053
- Dark Cyan #008B8B ΔE 0.062
Use #337770 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.