#337780
Closest named color: Deep Aqua (#08787F). oklch(53% 0.069 207.1), rgb(51, 119, 128).
Aa
White text reads best on this color (5.13:1).
About this color
#337780 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 53%, its chroma 0.069 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.021 away. White text reads best on it, at 5.13:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.09:1 |
| White text | 5.13:1 |
Values
| HEX | #337780 |
| RGB | rgb(51, 119, 128) |
| HSL | hsl(187, 43%, 35%) |
| OKLCH | oklch(53% 0.069 207.1) |
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 #337780 | 5.13:1 | AA | Lc -80.6 | Fine for body text |
| Black text on #337780 | 4.09:1 | AA large text | Lc 28.9 | Dividers and decoration only |
| #337780 text on white | 5.13:1 | AA | Lc 75.2 | Fine for body text |
| #337780 text on black | 4.09:1 | AA large text | Lc -26.5 | 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 600.
-
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 (this color)
#337780
oklch(53% 0.069 207.1)
-
Step 700
700
#2D6B73
oklch(49.1% 0.064 206.8)
-
Step 800
800
#27575E
oklch(42.6% 0.053 208)
-
Step 900
900
#25484D
oklch(37.7% 0.041 207.5)
-
Step 950
950
#162A2D
oklch(26.9% 0.026 207.9)
#337780 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) | #6E7381 | 0.068 |
| Deuteranopia (no green cones) | #626A80 | 0.062 |
| Tritanopia (no blue cones) | #007C7A | 0.029 |
| Achromatopsia (no color) | #6E6E6E | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337780
#337780
oklch(53% 0.069 207.1)
- #905C56
#905C56
oklch(53% 0.07 26.8)
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 #337780, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.021
- Bluegreen #017A79 ΔE 0.028
- Ocean #017B92 ΔE 0.031
- Teal #008080 ΔE 0.032
- Deep Turquoise #017374 ΔE 0.034
- Dark Aquamarine #017371 ΔE 0.037
- Metallic Blue #4F738E ΔE 0.041
- Sea Blue #047495 ΔE 0.042
Use #337780 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.