#28809E
Closest named color: Cerulean (#457B9D). oklch(56.2% 0.093 225.2), rgb(40, 128, 158).
Aa
Black text reads best on this color (4.67:1).
About this color
#28809E is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 56%, its chroma 0.093 and its hue 225°. Its hue sits on the cool side of the wheel. The nearest named color is Cerulean (#457B9D), ΔE 0.024 away. Black text reads best on it, at 4.67:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Cerulean (#457B9D) |
| Black text | 4.67:1 |
| White text | 4.49:1 |
Values
| HEX | #28809E |
| RGB | rgb(40, 128, 158) |
| HSL | hsl(195, 60%, 39%) |
| OKLCH | oklch(56.2% 0.093 225.2) |
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 #28809E | 4.49:1 | AA large text | Lc -76.4 | Fine for body text |
| Black text on #28809E | 4.67:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #28809E text on white | 4.49:1 | AA large text | Lc 70.9 | Content text, not long reading |
| #28809E text on black | 4.67:1 | AA | Lc -30.8 | Non-text elements, placeholder text |
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
#E2ECF0
oklch(93.7% 0.012 223.5)
-
Step 200
200
#CADDE5
oklch(88.6% 0.023 224.9)
-
Step 300
300
#A5C7D5
oklch(80.9% 0.041 224.8)
-
Step 400
400
#72AAC0
oklch(70.7% 0.067 224.6)
-
Step 500
500
#4994B0
oklch(63% 0.085 225.1)
-
Step 600
600 (this color)
#28809E
oklch(56.2% 0.093 225.2)
-
Step 700
700
#166A85
oklch(49% 0.086 225.2)
-
Step 800
800
#17576C
oklch(42.7% 0.071 224.5)
-
Step 900
900
#1B4858
oklch(37.8% 0.056 224.7)
-
Step 950
950
#112A33
oklch(26.9% 0.035 224)
#28809E 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) | #6F7DA0 | 0.070 |
| Deuteranopia (no green cones) | #5F729E | 0.061 |
| Tritanopia (no blue cones) | #00898A | 0.049 |
| Achromatopsia (no color) | #777777 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28809E
#28809E
oklch(56.2% 0.093 225.2)
- #A26345
#A26345
oklch(56.3% 0.093 45.8)
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 #28809E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cerulean #457B9D ΔE 0.024
- Teal Blue #01889F ΔE 0.024
- Ocean #017B92 ΔE 0.028
- Stormy Blue #507B9C ΔE 0.033
- Blue NCS #118AB2 ΔE 0.036
- Dull Blue #49759C ΔE 0.038
- Nice Blue #107AB0 ΔE 0.039
- Sea Blue #047495 ΔE 0.041
Use #28809E 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.