#28648D
Closest named color: Denim (#3B638C). oklch(48.3% 0.09 242), rgb(40, 100, 141).
Aa
White text reads best on this color (6.36:1).
About this color
#28648D is a medium-dark, moderately saturated blue. In OKLCH its lightness is 48%, its chroma 0.090 and its hue 242°. 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 6.36:1.
| Hue family | Blues |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.29:1 |
| White text | 6.36:1 |
Values
| HEX | #28648D |
| RGB | rgb(40, 100, 141) |
| HSL | hsl(204, 56%, 35%) |
| OKLCH | oklch(48.3% 0.09 242) |
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 #28648D | 6.36:1 | AA | Lc -86.5 | Fine for body text |
| Black text on #28648D | 3.29:1 | AA large text | Lc 22.6 | Dividers and decoration only |
| #28648D text on white | 6.36:1 | AA | Lc 81.4 | Fine for body text |
| #28648D text on black | 3.29:1 | 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
#CCDCE8
oklch(88.6% 0.024 240.1)
-
Step 300
300
#A9C5DB
oklch(81% 0.043 241.8)
-
Step 400
400
#7AA6C9
oklch(70.6% 0.07 242.9)
-
Step 500
500
#5690BB
oklch(63.1% 0.089 242.1)
-
Step 600
600
#397AA7
oklch(55.7% 0.096 241.6)
-
Step 700
700 (this color)
#28648D
oklch(48.3% 0.09 242)
-
Step 800
800
#255374
oklch(42.6% 0.075 242.5)
-
Step 900
900
#23455E
oklch(37.7% 0.059 242.4)
-
Step 950
950
#152937
oklch(27.1% 0.037 240.5)
#28648D 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) | #51658F | 0.044 |
| Deuteranopia (no green cones) | #435B8C | 0.034 |
| Tritanopia (no blue cones) | #006E72 | 0.064 |
| Achromatopsia (no color) | #5F5F5F | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28648D
#28648D
oklch(48.3% 0.09 242)
- #835222
#835222
oklch(48.5% 0.091 62)
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 #28648D, 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 0.019
- Light Navy Blue #2E5A88 ΔE 0.029
- Denim Blue #3B5B92 ΔE 0.033
- Dusky Blue #475F94 ΔE 0.036
- Ocean Blue #03719C ΔE 0.040
- YInMn Blue #415A77 ΔE 0.043
- Sea Blue #047495 ΔE 0.046
Use #28648D 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.