#337179
Closest named color: Deep Aqua (#08787F). oklch(51.1% 0.065 206.7), rgb(51, 113, 121).
Aa
White text reads best on this color (5.55:1).
About this color
#337179 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 51%, its chroma 0.065 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.026 away. White text reads best on it, at 5.55:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (51%) |
| Chroma | muted (0.065) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.77:1 |
| White text | 5.55:1 |
Values
| HEX | #337179 |
| RGB | rgb(51, 113, 121) |
| HSL | hsl(187, 41%, 34%) |
| OKLCH | oklch(51.1% 0.065 206.7) |
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 #337179 | 5.55:1 | AA | Lc -82.9 | Fine for body text |
| Black text on #337179 | 3.77:1 | AA large text | Lc 26.5 | Dividers and decoration only |
| #337179 text on white | 5.55:1 | AA | Lc 77.6 | Fine for body text |
| #337179 text on black | 3.77:1 | AA large text | Lc -24.2 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E3ECED
oklch(93.7% 0.01 204.9)
-
Step 200
200
#CDDDDF
oklch(88.6% 0.017 205.8)
-
Step 300
300
#AAC7CB
oklch(80.9% 0.032 206.7)
-
Step 400
400
#7CAAB0
oklch(70.7% 0.05 206.2)
-
Step 500
500
#58959D
oklch(63.2% 0.064 206.4)
-
Step 600
600
#3B7F88
oklch(55.6% 0.07 206.9)
-
Step 700
700 (this color)
#337179
oklch(51.1% 0.065 206.7)
-
Step 800
800
#26575E
oklch(42.6% 0.054 207.8)
-
Step 900
900
#25484D
oklch(37.7% 0.041 207.5)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#337179 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) | #686D7A | 0.063 |
| Deuteranopia (no green cones) | #5D6579 | 0.057 |
| Tritanopia (no blue cones) | #007573 | 0.029 |
| Achromatopsia (no color) | #686868 | 0.065 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337179
#337179
oklch(51.1% 0.065 206.7)
- #885852
#885852
oklch(51.2% 0.065 27.4)
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 #337179, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.026
- Deep Turquoise #017374 ΔE 0.026
- Dark Aquamarine #017371 ΔE 0.029
- Bluegreen #017A79 ΔE 0.033
- Dark Aqua #05696B ΔE 0.043
- Ocean #017B92 ΔE 0.043
- Slate #516572 ΔE 0.043
- Sea Blue #047495 ΔE 0.045
Use #337179 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.