#28678B
Closest named color: Denim (#3B638C). oklch(49% 0.086 237.4), rgb(40, 103, 139).
Aa
White text reads best on this color (6.17:1).
About this color
#28678B is a medium-dark, moderately saturated blue. In OKLCH its lightness is 49%, its chroma 0.086 and its hue 237°. Its hue sits on the cool side of the wheel. The nearest named color is Denim (#3B638C), ΔE 0.020 away. White text reads best on it, at 6.17:1.
| Hue family | Blues |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Denim (#3B638C) |
| Black text | 3.40:1 |
| White text | 6.17:1 |
Values
| HEX | #28678B |
| RGB | rgb(40, 103, 139) |
| HSL | hsl(202, 55%, 35%) |
| OKLCH | oklch(49% 0.086 237.4) |
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 #28678B | 6.17:1 | AA | Lc -85.7 | Fine for body text |
| Black text on #28678B | 3.40:1 | AA large text | Lc 23.5 | Dividers and decoration only |
| #28678B text on white | 6.17:1 | AA | Lc 80.5 | Fine for body text |
| #28678B text on black | 3.40:1 | AA large text | Lc -21.3 | 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
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#A8C5D9
oklch(80.8% 0.042 238.2)
-
Step 400
400
#79A7C5
oklch(70.6% 0.066 237.5)
-
Step 500
500
#5491B7
oklch(63.1% 0.086 237.6)
-
Step 600
600
#377BA3
oklch(55.7% 0.092 237.5)
-
Step 700
700 (this color)
#28678B
oklch(49% 0.086 237.4)
-
Step 800
800
#235471
oklch(42.6% 0.071 237.7)
-
Step 900
900
#22465B
oklch(37.7% 0.055 236.3)
-
Step 950
950
#152936
oklch(27% 0.036 238.5)
#28678B 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) | #56678D | 0.049 |
| Deuteranopia (no green cones) | #485D8A | 0.040 |
| Tritanopia (no blue cones) | #007073 | 0.057 |
| Achromatopsia (no color) | #616161 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28678B
#28678B
oklch(49% 0.086 237.4)
- #85532B
#85532B
oklch(49% 0.086 57.5)
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 #28678B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Denim #3B638C ΔE 0.020
- Peacock Blue #016795 ΔE 0.022
- Ocean Blue #03719C ΔE 0.035
- Light Navy Blue #2E5A88 ΔE 0.038
- Sea Blue #047495 ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.042
- Muted Blue #3B719F ΔE 0.045
Use #28678B 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.