#30728D
Closest named color: Sea Blue (#047495). oklch(52.1% 0.079 228.1), rgb(48, 114, 141).
Aa
White text reads best on this color (5.36:1).
About this color
#30728D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.079 and its hue 228°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.021 away. White text reads best on it, at 5.36:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.079) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.91:1 |
| White text | 5.36:1 |
Values
| HEX | #30728D |
| RGB | rgb(48, 114, 141) |
| HSL | hsl(197, 49%, 37%) |
| OKLCH | oklch(52.1% 0.079 228.1) |
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 #30728D | 5.36:1 | AA | Lc -81.8 | Fine for body text |
| Black text on #30728D | 3.91:1 | AA large text | Lc 27.6 | Dividers and decoration only |
| #30728D text on white | 5.36:1 | AA | Lc 76.5 | Fine for body text |
| #30728D text on black | 3.91:1 | AA large text | Lc -25.3 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A8C6D4
oklch(80.9% 0.038 227.7)
-
Step 400
400
#78A9BF
oklch(70.8% 0.061 227.6)
-
Step 500
500
#5393AF
oklch(63.1% 0.078 228.3)
-
Step 600
600
#347D9A
oklch(55.6% 0.084 227.5)
-
Step 700
700 (this color)
#30728D
oklch(52.1% 0.079 228.1)
-
Step 800
800
#22566B
oklch(42.8% 0.065 227.8)
-
Step 900
900
#214757
oklch(37.7% 0.051 227.9)
-
Step 950
950
#142A33
oklch(27.1% 0.033 226.5)
#30728D 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) | #64708E | 0.057 |
| Deuteranopia (no green cones) | #57668D | 0.051 |
| Tritanopia (no blue cones) | #007A7B | 0.048 |
| Achromatopsia (no color) | #6B6B6B | 0.079 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #30728D
#30728D
oklch(52.1% 0.079 228.1)
- #8E5B40
#8E5B40
oklch(52.1% 0.078 48.3)
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 #30728D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.021
- Ocean #017B92 ΔE 0.029
- Ocean Blue #03719C ΔE 0.031
- Metallic Blue #4F738E ΔE 0.031
- Muted Blue #3B719F ΔE 0.032
- Dull Blue #49759C ΔE 0.036
- Deep Aqua #08787F ΔE 0.038
- Cerulean #457B9D ΔE 0.041
Use #30728D 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.