#28588A
Closest named color: Light Navy Blue (#2E5A88). oklch(45.2% 0.097 251.6), rgb(40, 88, 138).
Aa
White text reads best on this color (7.36:1).
About this color
#28588A is a medium-dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.097 and its hue 252°. Its hue sits on the cool side of the wheel. The nearest named color is Light Navy Blue (#2E5A88), ΔE 0.010 away. White text reads best on it, at 7.36:1.
| Hue family | Blues |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.097) |
| Temperature | cool |
| Nearest name | Light Navy Blue (#2E5A88) |
| Black text | 2.85:1 |
| White text | 7.36:1 |
Values
| HEX | #28588A |
| RGB | rgb(40, 88, 138) |
| HSL | hsl(211, 55%, 35%) |
| OKLCH | oklch(45.2% 0.097 251.6) |
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 #28588A | 7.36:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #28588A | 2.85:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #28588A text on white | 7.36:1 | AAA | Lc 85.3 | Fine for body text |
| #28588A text on black | 2.85:1 | Fails | Lc -16.7 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF5
oklch(93.6% 0.017 250.8)
-
Step 200
200
#CADBEE
oklch(88.5% 0.032 251.1)
-
Step 300
300
#A6C4E5
oklch(80.9% 0.057 251)
-
Step 400
400
#76A4D8
oklch(70.6% 0.091 252.1)
-
Step 500
500
#518DCD
oklch(63.1% 0.116 251.5)
-
Step 600
600
#3376BA
oklch(55.6% 0.126 251.4)
-
Step 700
700
#2563A1
oklch(49.2% 0.118 251.5)
-
Step 800
800 (this color)
#28588A
oklch(45.2% 0.097 251.6)
-
Step 900
900
#204368
oklch(37.6% 0.076 251.6)
-
Step 950
950
#14283D
oklch(27.1% 0.047 251)
#28588A 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) | #425B8C | 0.031 |
| Deuteranopia (no green cones) | #345289 | 0.019 |
| Tritanopia (no blue cones) | #00646A | 0.076 |
| Achromatopsia (no color) | #565656 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #28588A
#28588A
oklch(45.2% 0.097 251.6)
- #774B00
#774B00
oklch(45.2% 0.097 71.2)
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 #28588A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Navy Blue #2E5A88 ΔE 0.010
- Dusk Blue #26538D ΔE 0.017
- Denim Blue #3B5B92 ΔE 0.026
- Deep Sea Blue #015482 ΔE 0.029
- Light Navy #155084 ΔE 0.031
- Denim #3B638C ΔE 0.040
- YInMn Blue #415A77 ΔE 0.042
- Peacock Blue #016795 ΔE 0.044
Use #28588A 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.