#337370
Closest named color: Deep Turquoise (#017374). oklch(51.3% 0.066 191.2), rgb(51, 115, 112).
Aa
White text reads best on this color (5.48:1).
About this color
#337370 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.066 and its hue 191°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Turquoise (#017374), ΔE 0.023 away. White text reads best on it, at 5.48:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Turquoise (#017374) |
| Black text | 3.82:1 |
| White text | 5.48:1 |
Values
| HEX | #337370 |
| RGB | rgb(51, 115, 112) |
| HSL | hsl(177, 39%, 33%) |
| OKLCH | oklch(51.3% 0.066 191.2) |
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 #337370 | 5.48:1 | AA | Lc -82.5 | Fine for body text |
| Black text on #337370 | 3.82:1 | AA large text | Lc 26.9 | Dividers and decoration only |
| #337370 text on white | 5.48:1 | AA | Lc 77.2 | Fine for body text |
| #337370 text on black | 3.82:1 | AA large text | Lc -24.5 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEB
oklch(93.6% 0.01 189.1)
-
Step 200
200
#CDDDDC
oklch(88.5% 0.017 192.3)
-
Step 300
300
#AAC8C5
oklch(81% 0.033 189.1)
-
Step 400
400
#7CABA8
oklch(70.7% 0.05 191.1)
-
Step 500
500
#589693
oklch(63% 0.064 191.7)
-
Step 600
600
#3B817D
oklch(55.7% 0.071 190.3)
-
Step 700
700 (this color)
#337370
oklch(51.3% 0.066 191.2)
-
Step 800
800
#265956
oklch(42.8% 0.055 190.1)
-
Step 900
900
#244947
oklch(37.7% 0.043 190.9)
-
Step 950
950
#162B2A
oklch(27.1% 0.027 191.8)
#337370 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) | #6D6E70 | 0.069 |
| Deuteranopia (no green cones) | #626671 | 0.065 |
| Tritanopia (no blue cones) | #007672 | 0.023 |
| Achromatopsia (no color) | #696969 | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337370
#337370
oklch(51.3% 0.066 191.2)
- #88575D
#88575D
oklch(51.3% 0.065 11.6)
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 #337370, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Turquoise #017374 ΔE 0.023
- Dark Aquamarine #017371 ΔE 0.023
- Bluegreen #017A79 ΔE 0.027
- Deep Aqua #08787F ΔE 0.028
- Teal #008080 ΔE 0.041
- Dark Aqua #05696B ΔE 0.043
- Slate #516572 ΔE 0.052
- Ocean #017B92 ΔE 0.053
Use #337370 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.