#337783
Closest named color: Deep Aqua (#08787F). oklch(53.1% 0.07 210.8), rgb(51, 119, 131).
Aa
White text reads best on this color (5.11:1).
About this color
#337783 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 53%, its chroma 0.070 and its hue 211°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Aqua (#08787F), ΔE 0.022 away. White text reads best on it, at 5.11:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.070) |
| Temperature | cool |
| Nearest name | Deep Aqua (#08787F) |
| Black text | 4.10:1 |
| White text | 5.11:1 |
Values
| HEX | #337783 |
| RGB | rgb(51, 119, 131) |
| HSL | hsl(189, 44%, 36%) |
| OKLCH | oklch(53.1% 0.07 210.8) |
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 #337783 | 5.11:1 | AA | Lc -80.4 | Fine for body text |
| Black text on #337783 | 4.10:1 | AA large text | Lc 29.0 | Dividers and decoration only |
| #337783 text on white | 5.11:1 | AA | Lc 75.1 | Fine for body text |
| #337783 text on black | 4.10:1 | AA large text | Lc -26.7 | 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
#CDDCE0
oklch(88.4% 0.017 215.5)
-
Step 300
300
#AAC7CC
oklch(81% 0.032 209.2)
-
Step 400
400
#7CAAB2
oklch(70.8% 0.05 209.4)
-
Step 500
500
#5894A0
oklch(63% 0.065 211.8)
-
Step 600
600 (this color)
#337783
oklch(53.1% 0.07 210.8)
-
Step 700
700
#2D6B76
oklch(49.2% 0.065 210.9)
-
Step 800
800
#265760
oklch(42.7% 0.055 211.2)
-
Step 900
900
#24484E
oklch(37.7% 0.043 209.4)
-
Step 950
950
#162A2E
oklch(27% 0.027 211.7)
#337783 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) | #6D7384 | 0.066 |
| Deuteranopia (no green cones) | #616A83 | 0.060 |
| Tritanopia (no blue cones) | #007C7B | 0.031 |
| Achromatopsia (no color) | #6E6E6E | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #337783
#337783
oklch(53.1% 0.07 210.8)
- #905C53
#905C53
oklch(52.9% 0.07 30.3)
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 #337783, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Aqua #08787F ΔE 0.022
- Ocean #017B92 ΔE 0.028
- Bluegreen #017A79 ΔE 0.031
- Teal #008080 ΔE 0.034
- Metallic Blue #4F738E ΔE 0.037
- Deep Turquoise #017374 ΔE 0.037
- Sea Blue #047495 ΔE 0.038
- Dark Aquamarine #017371 ΔE 0.041
Use #337783 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.