#28748E
Closest named color: Sea Blue (#047495). oklch(52.4% 0.083 224.7), rgb(40, 116, 142).
Aa
White text reads best on this color (5.27:1).
About this color
#28748E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.083 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.017 away. White text reads best on it, at 5.27:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.97:1 |
| White text | 5.27:1 |
Values
| HEX | #28748E |
| RGB | rgb(40, 116, 142) |
| HSL | hsl(195, 56%, 36%) |
| OKLCH | oklch(52.4% 0.083 224.7) |
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 #28748E | 5.27:1 | AA | Lc -81.3 | Fine for body text |
| Black text on #28748E | 3.97:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #28748E text on white | 5.27:1 | AA | Lc 75.9 | Fine for body text |
| #28748E text on black | 3.97:1 | AA large text | Lc -25.8 | 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 600.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3ECEF
oklch(93.7% 0.01 219.6)
-
Step 200
200
#CBDCE4
oklch(88.4% 0.021 227.6)
-
Step 300
300
#A8C6D3
oklch(80.9% 0.037 225.9)
-
Step 400
400
#78A9BD
oklch(70.7% 0.06 225.3)
-
Step 500
500
#5293AC
oklch(63% 0.076 225.1)
-
Step 600
600 (this color)
#28748E
oklch(52.4% 0.083 224.7)
-
Step 700
700
#256A82
oklch(49.2% 0.077 225)
-
Step 800
800
#205669
oklch(42.6% 0.064 224.7)
-
Step 900
900
#214755
oklch(37.6% 0.049 224.6)
-
Step 950
950
#142A32
oklch(27.1% 0.032 223.6)
#28748E 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) | #66718F | 0.065 |
| Deuteranopia (no green cones) | #57678E | 0.057 |
| Tritanopia (no blue cones) | #007C7C | 0.046 |
| Achromatopsia (no color) | #6C6C6C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28748E
#28748E
oklch(52.4% 0.083 224.7)
- #925A41
#925A41
oklch(52.4% 0.083 44.6)
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 #28748E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.017
- Ocean #017B92 ΔE 0.022
- Ocean Blue #03719C ΔE 0.030
- Deep Aqua #08787F ΔE 0.034
- Metallic Blue #4F738E ΔE 0.035
- Muted Blue #3B719F ΔE 0.035
- Dull Blue #49759C ΔE 0.038
- Cerulean #457B9D ΔE 0.040
Use #28748E 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.