#28748D
Closest named color: Sea Blue (#047495). oklch(52.4% 0.082 223.8), rgb(40, 116, 141).
Aa
White text reads best on this color (5.28:1).
About this color
#28748D is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 52%, its chroma 0.082 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Sea Blue (#047495), ΔE 0.018 away. White text reads best on it, at 5.28:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (52%) |
| Chroma | moderately saturated (0.082) |
| Temperature | cool |
| Nearest name | Sea Blue (#047495) |
| Black text | 3.97:1 |
| White text | 5.28:1 |
Values
| HEX | #28748D |
| RGB | rgb(40, 116, 141) |
| HSL | hsl(195, 56%, 35%) |
| OKLCH | oklch(52.4% 0.082 223.8) |
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 #28748D | 5.28:1 | AA | Lc -81.4 | Fine for body text |
| Black text on #28748D | 3.97:1 | AA large text | Lc 28.1 | Dividers and decoration only |
| #28748D text on white | 5.28:1 | AA | Lc 76.0 | Fine for body text |
| #28748D text on black | 3.97:1 | AA large text | Lc -25.7 | 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
#CBDCE3
oklch(88.4% 0.021 224.3)
-
Step 300
300
#A8C6D2
oklch(80.8% 0.036 224)
-
Step 400
400
#78A9BC
oklch(70.7% 0.059 224)
-
Step 500
500
#5294AB
oklch(63.2% 0.076 222.8)
-
Step 600
600 (this color)
#28748D
oklch(52.4% 0.082 223.8)
-
Step 700
700
#256A81
oklch(49.2% 0.077 223.9)
-
Step 800
800
#215669
oklch(42.6% 0.064 225)
-
Step 900
900
#214755
oklch(37.6% 0.049 224.6)
-
Step 950
950
#142A32
oklch(27.1% 0.032 223.6)
#28748D 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) | #66718E | 0.065 |
| Deuteranopia (no green cones) | #58678D | 0.058 |
| Tritanopia (no blue cones) | #007C7C | 0.045 |
| Achromatopsia (no color) | #6C6C6C | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28748D
#28748D
oklch(52.4% 0.082 223.8)
- #925A42
#925A42
oklch(52.5% 0.082 43.8)
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 #28748D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea Blue #047495 ΔE 0.018
- Ocean #017B92 ΔE 0.022
- Ocean Blue #03719C ΔE 0.031
- Deep Aqua #08787F ΔE 0.032
- Metallic Blue #4F738E ΔE 0.035
- Muted Blue #3B719F ΔE 0.037
- Dull Blue #49759C ΔE 0.040
- Cerulean #457B9D ΔE 0.041
Use #28748D 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.