#337B85
Closest named color: Deep Aqua (#08787F). oklch(54.2% 0.072 207.7), rgb(51, 123, 133).
Aa
White text reads best on this color (4.86:1).
About this color
#337B85 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 54%, its chroma 0.072 and its hue 208°. 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 4.86:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.31:1 |
| White text | 4.86:1 |
Values
| HEX | #337B85 |
| RGB | rgb(51, 123, 133) |
| HSL | hsl(187, 45%, 36%) |
| OKLCH | oklch(54.2% 0.072 207.7) |
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 #337B85 | 4.86:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #337B85 | 4.31:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #337B85 text on white | 4.86:1 | AA | Lc 73.5 | Content text, not long reading |
| #337B85 text on black | 4.31:1 | AA large text | Lc -28.2 | 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 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
#CCDDDF
oklch(88.5% 0.018 205.3)
-
Step 300
300
#A9C7CB
oklch(80.9% 0.033 206.4)
-
Step 400
400
#7AAAB1
oklch(70.6% 0.052 207.3)
-
Step 500
500
#56959E
oklch(63.1% 0.066 207.4)
-
Step 600
600 (this color)
#337B85
oklch(54.2% 0.072 207.7)
-
Step 700
700
#296B74
oklch(49% 0.067 207.6)
-
Step 800
800
#24585F
oklch(42.8% 0.056 207.2)
-
Step 900
900
#23484E
oklch(37.7% 0.043 209.1)
-
Step 950
950
#152A2D
oklch(26.9% 0.027 207.4)
#337B85 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) | #717686 | 0.070 |
| Deuteranopia (no green cones) | #656D85 | 0.065 |
| Tritanopia (no blue cones) | #00807E | 0.029 |
| Achromatopsia (no color) | #717171 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337B85
#337B85
oklch(54.2% 0.072 207.7)
- #955F58
#955F58
oklch(54.3% 0.072 27.7)
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 #337B85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.026
- Ocean #017B92 ΔE 0.027
- Teal #008080 ΔE 0.027
- Bluegreen #017A79 ΔE 0.031
- Metallic Blue #4F738E ΔE 0.041
- Cerulean #457B9D ΔE 0.044
- Deep Turquoise #017374 ΔE 0.044
- Sea Blue #047495 ΔE 0.044
Use #337B85 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.