#337766
Closest named color: Bluegreen (#017A79). oklch(52% 0.074 174.4), rgb(51, 119, 102).
Aa
White text reads best on this color (5.28:1).
About this color
#337766 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.074 and its hue 174°. Its hue sits on the cool side of the wheel. The nearest named color is Bluegreen (#017A79), ΔE 0.032 away. White text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.074) |
| Temperature | cool |
| Nearest name | Bluegreen (#017A79) |
| Black text | 3.97:1 |
| White text | 5.28:1 |
Values
| HEX | #337766 |
| RGB | rgb(51, 119, 102) |
| HSL | hsl(165, 40%, 33%) |
| OKLCH | oklch(52% 0.074 174.4) |
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 #337766 | 5.28:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #337766 | 3.97:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #337766 text on white | 5.28:1 | AA | Lc 76.1 | Fine for body text |
| #337766 text on black | 3.97:1 | AA large text | Lc -25.6 | 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 700.
-
Step 50
50
#F2F6F5
oklch(97% 0.004 179.7)
-
Step 100
100
#E3ECE9
oklch(93.5% 0.01 174.3)
-
Step 200
200
#CCDED8
oklch(88.5% 0.021 173.9)
-
Step 300
300
#AAC9BF
oklch(81% 0.036 173.9)
-
Step 400
400
#7BAD9E
oklch(70.8% 0.058 174)
-
Step 500
500
#569886
oklch(63% 0.074 174.3)
-
Step 600
600
#388370
oklch(55.7% 0.081 174.1)
-
Step 700
700 (this color)
#337766
oklch(52% 0.074 174.4)
-
Step 800
800
#245A4D
oklch(42.7% 0.061 175)
-
Step 900
900
#234A40
oklch(37.7% 0.048 174.9)
-
Step 950
950
#152B25
oklch(26.9% 0.03 174.4)
#337766 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) | #737065 | 0.077 |
| Deuteranopia (no green cones) | #696867 | 0.075 |
| Tritanopia (no blue cones) | #0C7872 | 0.024 |
| Achromatopsia (no color) | #6C6C6C | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337766
#337766
oklch(52% 0.074 174.4)
- #8B576C
#8B576C
oklch(52.1% 0.074 354.2)
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 #337766, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bluegreen #017A79 ΔE 0.032
- Dark Aquamarine #017371 ΔE 0.033
- Deep Turquoise #017374 ΔE 0.036
- Deep Aqua #08787F ΔE 0.041
- Teal #008080 ΔE 0.041
- Dark Aqua #05696B ΔE 0.056
- Dark Green Blue #1F6357 ΔE 0.067
- Ocean #017B92 ΔE 0.067
Use #337766 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.