#28636F
Closest named color: Petrol (#005F6A). oklch(46.6% 0.063 213.2), rgb(40, 99, 111).
Aa
White text reads best on this color (6.76:1).
About this color
#28636F is a medium-dark, muted teal or cyan. In OKLCH its lightness is 47%, its chroma 0.063 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Petrol (#005F6A), ΔE 0.026 away. White text reads best on it, at 6.76:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.063) |
| Temperature | cool |
| Nearest name | Petrol (#005F6A) |
| Black text | 3.10:1 |
| White text | 6.76:1 |
Values
| HEX | #28636F |
| RGB | rgb(40, 99, 111) |
| HSL | hsl(190, 47%, 30%) |
| OKLCH | oklch(46.6% 0.063 213.2) |
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 #28636F | 6.76:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #28636F | 3.10:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #28636F text on white | 6.76:1 | AA | Lc 83.1 | Fine for body text |
| #28636F text on black | 3.10:1 | AA large text | Lc -18.8 | 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
#F2F6F7
oklch(97% 0.004 214.3)
-
Step 100
100
#E4EBED
oklch(93.5% 0.008 216.6)
-
Step 200
200
#CDDCE0
oklch(88.4% 0.017 215.5)
-
Step 300
300
#ABC6CC
oklch(80.8% 0.03 212.6)
-
Step 400
400
#7DA9B3
oklch(70.7% 0.049 213.3)
-
Step 500
500
#5B94A0
oklch(63.2% 0.062 212.5)
-
Step 600
600
#3E7E8B
oklch(55.6% 0.068 212.6)
-
Step 700
700 (this color)
#28636F
oklch(46.6% 0.063 213.2)
-
Step 800
800
#295760
oklch(42.8% 0.052 212)
-
Step 900
900
#26474F
oklch(37.6% 0.041 215.1)
-
Step 950
950
#172A2E
oklch(27.1% 0.026 212.5)
#28636F 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) | #5A6070 | 0.058 |
| Deuteranopia (no green cones) | #4F586F | 0.052 |
| Tritanopia (no blue cones) | #006867 | 0.029 |
| Achromatopsia (no color) | #5B5B5B | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28636F
#28636F
oklch(46.6% 0.063 213.2)
- #794C42
#794C42
oklch(46.5% 0.064 33.2)
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 #28636F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Petrol #005F6A ΔE 0.026
- Dark Aqua #05696B ΔE 0.026
- YInMn Blue #415A77 ΔE 0.041
- Dark Green Blue #1F6357 ΔE 0.042
- Slate #516572 ΔE 0.047
- Deep Turquoise #017374 ΔE 0.049
- Dark Aquamarine #017371 ΔE 0.050
- Denim #3B638C ΔE 0.054
Use #28636F 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.