#2B568B
Closest named color: Dusk Blue (#26538D). oklch(44.9% 0.1 254.9), rgb(43, 86, 139).
Aa
White text reads best on this color (7.48:1).
About this color
#2B568B is a dark, moderately saturated blue. In OKLCH its lightness is 45%, its chroma 0.100 and its hue 255°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk Blue (#26538D), ΔE 0.012 away. White text reads best on it, at 7.48:1.
| Hue family | Blues |
| Lightness | dark (45%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Dusk Blue (#26538D) |
| Black text | 2.80:1 |
| White text | 7.48:1 |
Values
| HEX | #2B568B |
| RGB | rgb(43, 86, 139) |
| HSL | hsl(213, 53%, 36%) |
| OKLCH | oklch(44.9% 0.1 254.9) |
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 #2B568B | 7.48:1 | AAA | Lc -90.6 | Preferred for body text |
| Black text on #2B568B | 2.80:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #2B568B text on white | 7.48:1 | AAA | Lc 85.8 | Fine for body text |
| #2B568B text on black | 2.80:1 | Fails | Lc -16.3 | 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 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
#CBDBEF
oklch(88.6% 0.033 254)
-
Step 300
300
#A8C3E6
oklch(80.9% 0.058 255)
-
Step 400
400
#78A3DA
oklch(70.6% 0.094 254.9)
-
Step 500
500
#558CD0
oklch(63.2% 0.119 254.6)
-
Step 600
600
#3974BD
oklch(55.5% 0.13 255.1)
-
Step 700
700
#2B61A3
oklch(49% 0.121 255.1)
-
Step 800
800 (this color)
#2B568B
oklch(44.9% 0.1 254.9)
-
Step 900
900
#23426A
oklch(37.6% 0.078 255.6)
-
Step 950
950
#15273E
oklch(27% 0.049 255.2)
#2B568B 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) | #3E5A8D | 0.025 |
| Deuteranopia (no green cones) | #30518A | 0.014 |
| Tritanopia (no blue cones) | #00626A | 0.078 |
| Achromatopsia (no color) | #555555 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B568B
#2B568B
oklch(44.9% 0.1 254.9)
- #734C00
#734C00
oklch(44.9% 0.095 75.2)
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 #2B568B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk Blue #26538D ΔE 0.012
- Light Navy Blue #2E5A88 ΔE 0.015
- Denim Blue #3B5B92 ΔE 0.026
- Light Navy #155084 ΔE 0.029
- Deep Sea Blue #015482 ΔE 0.031
- Twilight #4E518B ΔE 0.043
- Dusk #4E5481 ΔE 0.044
- Denim #3B638C ΔE 0.045
Use #2B568B 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.