#28587B
Closest named color: Light Navy Blue (#2E5A88). oklch(44.4% 0.078 242.9), rgb(40, 88, 123).
Aa
White text reads best on this color (7.57:1).
About this color
#28587B is a dark, moderately saturated blue. In OKLCH its lightness is 44%, its chroma 0.078 and its hue 243°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.023 away. White text reads best on it, at 7.57:1.
| Hue family | Blues |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.77:1 |
| White text | 7.57:1 |
Values
| HEX | #28587B |
| RGB | rgb(40, 88, 123) |
| HSL | hsl(205, 51%, 32%) |
| OKLCH | oklch(44.4% 0.078 242.9) |
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 #28587B | 7.57:1 | AAA | Lc -90.9 | Preferred for body text |
| Black text on #28587B | 2.77:1 | Fails | Lc 17.9 | Dividers and decoration only |
| #28587B text on white | 7.57:1 | AAA | Lc 86.1 | Fine for body text |
| #28587B text on black | 2.77:1 | Fails | Lc -15.9 | 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 800.
-
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
#CBDCE9
oklch(88.6% 0.026 240.7)
-
Step 300
300
#A8C5DC
oklch(80.9% 0.045 242.1)
-
Step 400
400
#79A6CB
oklch(70.7% 0.073 243.9)
-
Step 500
500
#5490BD
oklch(63.1% 0.093 242.6)
-
Step 600
600
#3779AA
oklch(55.6% 0.102 243.6)
-
Step 700
700
#286692
oklch(49.1% 0.095 243.1)
-
Step 800
800 (this color)
#28587B
oklch(44.4% 0.078 242.9)
-
Step 900
900
#22455F
oklch(37.7% 0.06 242.8)
-
Step 950
950
#152938
oklch(27.2% 0.038 242.4)
#28587B 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) | #48597D | 0.037 |
| Deuteranopia (no green cones) | #3D507A | 0.030 |
| Tritanopia (no blue cones) | #006164 | 0.058 |
| Achromatopsia (no color) | #545454 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28587B
#28587B
oklch(44.4% 0.078 242.9)
- #724921
#724921
oklch(44.4% 0.078 62.6)
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 #28587B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.023
- Deep Sea Blue #015482 ΔE 0.029
- YInMn Blue #415A77 ΔE 0.029
- Light Navy #155084 ΔE 0.036
- Dusk Blue #26538D ΔE 0.037
- Denim Blue #3B5B92 ΔE 0.044
- Petrol #005F6A ΔE 0.046
- Denim #3B638C ΔE 0.046
Use #28587B 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.