#28506F
Closest named color: Deep Sea Blue (#015482). oklch(41.7% 0.069 244), rgb(40, 80, 111).
Aa
White text reads best on this color (8.51:1).
About this color
#28506F is a dark, muted blue. In OKLCH its lightness is 42%, its chroma 0.069 and its hue 244°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sea Blue (#015482), ΔE 0.035 away. White text reads best on it, at 8.51:1.
| Hue family | Blues |
| Lightness | dark (42%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Deep Sea Blue (#015482) |
| Black text | 2.46:1 |
| White text | 8.51:1 |
Values
| HEX | #28506F |
| RGB | rgb(40, 80, 111) |
| HSL | hsl(206, 47%, 30%) |
| OKLCH | oklch(41.7% 0.069 244) |
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 #28506F | 8.51:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #28506F | 2.46:1 | Fails | Lc 14.9 | Not readable |
| #28506F text on white | 8.51:1 | AAA | Lc 89.1 | Fine for body text |
| #28506F text on black | 2.46:1 | Fails | Lc -13.1 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E4EBF1
oklch(93.6% 0.011 243.7)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#ABC4D9
oklch(80.8% 0.04 243.6)
-
Step 400
400
#7EA6C6
oklch(70.8% 0.064 242.9)
-
Step 500
500
#5C8FB8
oklch(63.1% 0.083 243.9)
-
Step 600
600
#4179A4
oklch(55.7% 0.09 243.6)
-
Step 700
700
#33658C
oklch(49% 0.083 244.2)
-
Step 800
800 (this color)
#28506F
oklch(41.7% 0.069 244)
-
Step 900
900
#27455C
oklch(37.8% 0.053 243)
-
Step 950
950
#172836
oklch(26.9% 0.035 244.4)
#28506F 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) | #425170 | 0.032 |
| Deuteranopia (no green cones) | #39496E | 0.027 |
| Tritanopia (no blue cones) | #00585B | 0.054 |
| Achromatopsia (no color) | #4D4D4D | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28506F
#28506F
oklch(41.7% 0.069 244)
- #664421
#664421
oklch(41.7% 0.068 64.7)
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 #28506F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sea Blue #015482 ΔE 0.035
- Light Navy #155084 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.041
- YInMn Blue #415A77 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.048
- Dusk Blue #26538D ΔE 0.049
- Deep Teal #00555A ΔE 0.051
- Charcoal #264653 ΔE 0.051
Use #28506F 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.