#28759C
Closest named color: Muted Blue (#3B719F). oklch(53.4% 0.095 235), rgb(40, 117, 156).
Aa
White text reads best on this color (5.10:1).
About this color
#28759C is a medium-dark, moderately saturated blue. In OKLCH its lightness is 53%, its chroma 0.095 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Muted Blue (#3B719F), ΔE 0.019 away. White text reads best on it, at 5.10:1.
| Hue family | Blues |
| Lightness | medium-dark (53%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Muted Blue (#3B719F) |
| Black text | 4.11:1 |
| White text | 5.10:1 |
Values
| HEX | #28759C |
| RGB | rgb(40, 117, 156) |
| HSL | hsl(200, 59%, 38%) |
| OKLCH | oklch(53.4% 0.095 235) |
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 #28759C | 5.10:1 | AA | Lc -80.3 | Fine for body text |
| Black text on #28759C | 4.11:1 | AA large text | Lc 29.2 | Dividers and decoration only |
| #28759C text on white | 5.10:1 | AA | Lc 74.9 | Content text, not long reading |
| #28759C text on black | 4.11:1 | AA large text | Lc -26.8 | 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 600.
-
Step 50
50
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE7
oklch(88.5% 0.024 236)
-
Step 300
300
#A7C6D9
oklch(81% 0.043 235)
-
Step 400
400
#76A8C6
oklch(70.7% 0.069 235.4)
-
Step 500
500
#5092B7
oklch(63.1% 0.088 235)
-
Step 600
600 (this color)
#28759C
oklch(53.4% 0.095 235)
-
Step 700
700
#21688C
oklch(49.1% 0.089 235.2)
-
Step 800
800
#1E5571
oklch(42.7% 0.073 234.5)
-
Step 900
900
#1F465C
oklch(37.6% 0.058 235.9)
-
Step 950
950
#132936
oklch(26.9% 0.037 236.3)
#28759C 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) | #62749E | 0.058 |
| Deuteranopia (no green cones) | #52699B | 0.048 |
| Tritanopia (no blue cones) | #007F82 | 0.060 |
| Achromatopsia (no color) | #6E6E6E | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28759C
#28759C
oklch(53.4% 0.095 235)
- #975D32
#975D32
oklch(53.4% 0.096 55.5)
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 #28759C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Muted Blue #3B719F ΔE 0.019
- Sea Blue #047495 ΔE 0.019
- Ocean Blue #03719C ΔE 0.020
- Flat Blue #3C73A8 ΔE 0.027
- Dull Blue #49759C ΔE 0.028
- Ocean #017B92 ΔE 0.030
- Nice Blue #107AB0 ΔE 0.031
- Cerulean #457B9D ΔE 0.032
Use #28759C 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.