#337478
Closest named color: Deep Aqua (#08787F). oklch(51.9% 0.066 200.8), rgb(51, 116, 120).
Aa
White text reads best on this color (5.37:1).
About this color
#337478 is a medium-dark, muted teal or cyan. In OKLCH its lightness is 52%, its chroma 0.066 and its hue 201°. 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 5.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | muted (0.066) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 3.91:1 |
| White text | 5.37:1 |
Values
| HEX | #337478 |
| RGB | rgb(51, 116, 120) |
| HSL | hsl(183, 40%, 34%) |
| OKLCH | oklch(51.9% 0.066 200.8) |
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 #337478 | 5.37:1 | AA | Lc -81.9 | Fine for body text |
| Black text on #337478 | 3.91:1 | AA large text | Lc 27.5 | Dividers and decoration only |
| #337478 text on white | 5.37:1 | AA | Lc 76.6 | Fine for body text |
| #337478 text on black | 3.91:1 | AA large text | Lc -25.2 | 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
#F2F6F6
oklch(97% 0.004 197.1)
-
Step 100
100
#E3ECEC
oklch(93.6% 0.01 197)
-
Step 200
200
#CCDDDE
oklch(88.5% 0.018 201.1)
-
Step 300
300
#AAC7C9
oklch(80.9% 0.031 201.7)
-
Step 400
400
#7BABAE
oklch(70.8% 0.051 200.9)
-
Step 500
500
#56969A
oklch(63.2% 0.066 200.8)
-
Step 600
600
#398084
oklch(55.6% 0.071 200.3)
-
Step 700
700 (this color)
#337478
oklch(51.9% 0.066 200.8)
-
Step 800
800
#25585B
oklch(42.7% 0.054 200.5)
-
Step 900
900
#23484B
oklch(37.6% 0.043 202.4)
-
Step 950
950
#162A2C
oklch(26.9% 0.026 203.9)
#337478 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) | #6C6F78 | 0.067 |
| Deuteranopia (no green cones) | #616778 | 0.062 |
| Tritanopia (no blue cones) | #007875 | 0.026 |
| Achromatopsia (no color) | #6A6A6A | 0.066 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337478
#337478
oklch(51.9% 0.066 200.8)
- #8B5958
#8B5958
oklch(51.9% 0.067 20.8)
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 #337478, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.021
- Deep Turquoise #017374 ΔE 0.026
- Bluegreen #017A79 ΔE 0.026
- Dark Aquamarine #017371 ΔE 0.028
- Teal #008080 ΔE 0.037
- Ocean #017B92 ΔE 0.042
- Dark Aqua #05696B ΔE 0.048
- Metallic Blue #4F738E ΔE 0.049
Use #337478 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.