#28648E
Closest named color: Denim (#3B638C). oklch(48.4% 0.091 242.6), rgb(40, 100, 142).
Aa
White text reads best on this color (6.35:1).
About this color
#28648E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.091 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.017 away. White text reads best on it, at 6.35:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.30:1 |
| White text | 6.35:1 |
Values
| HEX | #28648E |
| RGB | rgb(40, 100, 142) |
| HSL | hsl(205, 56%, 36%) |
| OKLCH | oklch(48.4% 0.091 242.6) |
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 #28648E | 6.35:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #28648E | 3.30:1 | AA large text | Lc 22.7 | Dividers and decoration only |
| #28648E text on white | 6.35:1 | AA | Lc 81.4 | Fine for body text |
| #28648E text on black | 3.30:1 | AA large text | Lc -20.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF2
oklch(93.6% 0.013 244.3)
-
Step 200
200
#CCDBE8
oklch(88.4% 0.024 244.2)
-
Step 300
300
#A9C5DB
oklch(81% 0.043 241.8)
-
Step 400
400
#79A6CA
oklch(70.6% 0.072 243.1)
-
Step 500
500
#5590BC
oklch(63.1% 0.091 242.3)
-
Step 600
600
#3879A8
oklch(55.5% 0.099 242.8)
-
Step 700
700 (this color)
#28648E
oklch(48.4% 0.091 242.6)
-
Step 800
800
#245375
oklch(42.6% 0.076 242.9)
-
Step 900
900
#23455E
oklch(37.7% 0.059 242.4)
-
Step 950
950
#152937
oklch(27.1% 0.037 240.5)
#28648E 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) | #516590 | 0.044 |
| Deuteranopia (no green cones) | #435B8D | 0.034 |
| Tritanopia (no blue cones) | #006E73 | 0.064 |
| Achromatopsia (no color) | #5F5F5F | 0.091 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28648E
#28648E
oklch(48.4% 0.091 242.6)
- #835220
#835220
oklch(48.4% 0.092 62.8)
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 #28648E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.017
- Peacock Blue #016795 ΔE 0.018
- Light Navy Blue #2E5A88 ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.032
- Dusky Blue #475F94 ΔE 0.036
- Ocean Blue #03719C ΔE 0.040
- YInMn Blue #415A77 ΔE 0.044
- Sea Blue #047495 ΔE 0.046
Use #28648E 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.