#28728A
Closest named color: Sea Blue (#047495). oklch(51.7% 0.08 223.3), rgb(40, 114, 138).
Aa
White text reads best on this color (5.43:1).
About this color
#28728A is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.080 and its hue 223°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.020 away. White text reads best on it, at 5.43:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.080) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.86:1 |
| White text | 5.43:1 |
Values
| HEX | #28728A |
| RGB | rgb(40, 114, 138) |
| HSL | hsl(195, 55%, 35%) |
| OKLCH | oklch(51.7% 0.08 223.3) |
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 #28728A | 5.43:1 | AA | Lc -82.2 | Fine for body text |
| Black text on #28728A | 3.86:1 | AA large text | Lc 27.2 | Dividers and decoration only |
| #28728A text on white | 5.43:1 | AA | Lc 76.8 | Fine for body text |
| #28728A text on black | 3.86:1 | AA large text | Lc -24.9 | 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
#E2ECEF
oklch(93.6% 0.011 217.5)
-
Step 200
200
#CBDDE4
oklch(88.6% 0.022 223)
-
Step 300
300
#A6C7D3
oklch(80.9% 0.039 221.9)
-
Step 400
400
#75AABD
oklch(70.8% 0.062 222.4)
-
Step 500
500
#4E94AD
oklch(63.1% 0.08 223.6)
-
Step 600
600
#2D7E98
oklch(55.6% 0.086 223.1)
-
Step 700
700 (this color)
#28728A
oklch(51.7% 0.08 223.3)
-
Step 800
800
#1C576A
oklch(42.8% 0.067 223.2)
-
Step 900
900
#1E4856
oklch(37.8% 0.052 222.7)
-
Step 950
950
#132A32
oklch(27% 0.033 222.8)
#28728A 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) | #646F8B | 0.063 |
| Deuteranopia (no green cones) | #57658A | 0.057 |
| Tritanopia (no blue cones) | #00797A | 0.041 |
| Achromatopsia (no color) | #6A6A6A | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28728A
#28728A
oklch(51.7% 0.08 223.3)
- #8F5841
#8F5841
oklch(51.7% 0.081 43.3)
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 #28728A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.020
- Ocean #017B92 ΔE 0.027
- Deep Aqua #08787F ΔE 0.032
- Ocean Blue #03719C ΔE 0.032
- Metallic Blue #4F738E ΔE 0.038
- Muted Blue #3B719F ΔE 0.040
- Deep Turquoise #017374 ΔE 0.042
- Dull Blue #49759C ΔE 0.044
Use #28728A 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.