#28566E
Closest named color: YInMn Blue (#415A77). oklch(43.2% 0.064 233.7), rgb(40, 86, 110).
Aa
White text reads best on this color (7.93:1).
About this color
#28566E is a dark, muted blue. In OKLCH its lightness is 43%, its chroma 0.064 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is YInMn Blue (#415A77), ΔE 0.035 away. White text reads best on it, at 7.93:1.
| Hue family | Blues |
| Lightness | dark (43%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | YInMn Blue (#415A77) |
| Black text | 2.64:1 |
| White text | 7.93:1 |
Values
| HEX | #28566E |
| RGB | rgb(40, 86, 110) |
| HSL | hsl(201, 47%, 29%) |
| OKLCH | oklch(43.2% 0.064 233.7) |
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 #28566E | 7.93:1 | AAA | Lc -92.1 | Preferred for body text |
| Black text on #28566E | 2.64:1 | Fails | Lc 16.7 | Dividers and decoration only |
| #28566E text on white | 7.93:1 | AAA | Lc 87.3 | Fine for body text |
| #28566E text on black | 2.64:1 | Fails | Lc -14.8 | Not readable |
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 800.
-
Step 50
50
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E3EBF0
oklch(93.5% 0.011 234.8)
-
Step 200
200
#CCDCE5
oklch(88.5% 0.021 232.2)
-
Step 300
300
#AAC5D5
oklch(80.8% 0.037 233.9)
-
Step 400
400
#7BA7C0
oklch(70.6% 0.06 233.6)
-
Step 500
500
#5891B1
oklch(63% 0.077 234.4)
-
Step 600
600
#3B7B9C
oklch(55.5% 0.083 233.5)
-
Step 700
700
#2D6886
oklch(49.2% 0.078 233.6)
-
Step 800
800 (this color)
#28566E
oklch(43.2% 0.064 233.7)
-
Step 900
900
#254658
oklch(37.7% 0.05 234)
-
Step 950
950
#162934
oklch(27% 0.032 235.1)
#28566E 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) | #4A556F | 0.041 |
| Deuteranopia (no green cones) | #414E6E | 0.036 |
| Tritanopia (no blue cones) | #005C5E | 0.044 |
| Achromatopsia (no color) | #515151 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28566E
#28566E
oklch(43.2% 0.064 233.7)
- #6C462D
#6C462D
oklch(43.1% 0.065 53.5)
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 #28566E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- YInMn Blue #415A77 ΔE 0.035
- Petrol #005F6A ΔE 0.035
- Deep Sea Blue #015482 ΔE 0.040
- Deep Teal #00555A ΔE 0.044
- Light Navy Blue #2E5A88 ΔE 0.044
- Light Navy #155084 ΔE 0.047
- Dark Slate Gray #2F4F4F ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.053
Use #28566E 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.