#28748B
Closest named color: Sea Blue (#047495). oklch(52.3% 0.081 221.8), rgb(40, 116, 139).
Aa
White text reads best on this color (5.30:1).
About this color
#28748B is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.081 and its hue 222°. 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 5.30:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.081) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.96:1 |
| White text | 5.30:1 |
Values
| HEX | #28748B |
| RGB | rgb(40, 116, 139) |
| HSL | hsl(194, 55%, 35%) |
| OKLCH | oklch(52.3% 0.081 221.8) |
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 #28748B | 5.30:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #28748B | 3.96:1 | AA large text | Lc 28.0 | Dividers and decoration only |
| #28748B text on white | 5.30:1 | AA | Lc 76.1 | Fine for body text |
| #28748B text on black | 3.96:1 | AA large text | Lc -25.6 | 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
#CADDE3
oklch(88.5% 0.022 218.6)
-
Step 300
300
#A6C7D3
oklch(80.9% 0.039 221.9)
-
Step 400
400
#74AABD
oklch(70.7% 0.063 222)
-
Step 500
500
#4D95AC
oklch(63.2% 0.08 221.2)
-
Step 600
600
#2B7E98
oklch(55.5% 0.087 222.7)
-
Step 700
700 (this color)
#28748B
oklch(52.3% 0.081 221.8)
-
Step 800
800
#1B5769
oklch(42.7% 0.067 221.8)
-
Step 900
900
#1D4855
oklch(37.7% 0.052 220.6)
-
Step 950
950
#122A32
oklch(26.9% 0.033 222)
#28748B 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) | #66718C | 0.065 |
| Deuteranopia (no green cones) | #59678B | 0.059 |
| Tritanopia (no blue cones) | #007B7B | 0.041 |
| Achromatopsia (no color) | #6B6B6B | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28748B
#28748B
oklch(52.3% 0.081 221.8)
- #915944
#915944
oklch(52.2% 0.081 41.2)
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 #28748B, 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 0.022
- Deep Aqua #08787F ΔE 0.029
- Ocean Blue #03719C ΔE 0.034
- Metallic Blue #4F738E ΔE 0.036
- Muted Blue #3B719F ΔE 0.040
- Dull Blue #49759C ΔE 0.042
- Bluegreen #017A79 ΔE 0.042
Use #28748B 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.