#28678E
Closest named color: Denim (#3B638C). oklch(49.1% 0.089 239.5), rgb(40, 103, 142).
Aa
White text reads best on this color (6.13:1).
About this color
#28678E is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.089 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.018 away. White text reads best on it, at 6.13:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.42:1 |
| White text | 6.13:1 |
Values
| HEX | #28678E |
| RGB | rgb(40, 103, 142) |
| HSL | hsl(203, 56%, 36%) |
| OKLCH | oklch(49.1% 0.089 239.5) |
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 #28678E | 6.13:1 | AA | Lc -85.5 | Fine for body text |
| Black text on #28678E | 3.42:1 | AA large text | Lc 23.7 | Dividers and decoration only |
| #28678E text on white | 6.13:1 | AA | Lc 80.4 | Fine for body text |
| #28678E text on black | 3.42:1 | AA large text | Lc -21.5 | 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CBDCE8
oklch(88.5% 0.025 238.4)
-
Step 300
300
#A8C5DA
oklch(80.9% 0.043 239.6)
-
Step 400
400
#78A7C8
oklch(70.7% 0.07 239.6)
-
Step 500
500
#5491B9
oklch(63.2% 0.088 239)
-
Step 600
600
#367AA5
oklch(55.5% 0.096 239.5)
-
Step 700
700 (this color)
#28678E
oklch(49.1% 0.089 239.5)
-
Step 800
800
#235473
oklch(42.7% 0.074 239.5)
-
Step 900
900
#22465D
oklch(37.8% 0.057 238.8)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#28678E 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) | #556790 | 0.048 |
| Deuteranopia (no green cones) | #475D8D | 0.039 |
| Tritanopia (no blue cones) | #007174 | 0.062 |
| Achromatopsia (no color) | #626262 | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28678E
#28678E
oklch(49.1% 0.089 239.5)
- #865327
#865327
oklch(49.1% 0.09 59)
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 #28678E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.018
- Peacock Blue #016795 ΔE 0.019
- Ocean Blue #03719C ΔE 0.033
- Light Navy Blue #2E5A88 ΔE 0.038
- Sea Blue #047495 ΔE 0.038
- Dusky Blue #475F94 ΔE 0.039
- Denim Blue #3B5B92 ΔE 0.039
- Muted Blue #3B719F ΔE 0.042
Use #28678E 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.