#2B328B
Closest named color: Sapphire (#2138AB). oklch(37.1% 0.146 273.4), rgb(43, 50, 139).
Aa
White text reads best on this color (10.87:1).
About this color
#2B328B is a dark, vivid blue. In OKLCH its lightness is 37%, its chroma 0.146 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Sapphire (#2138AB), ΔE 0.055 away. White text reads best on it, at 10.87:1.
| Hue family | Blues |
| Lightness | dark (37%) |
| Chroma | vivid (0.146) |
| Temperature | cool |
| Nearest name | Sapphire (#2138AB) |
| Black text | 1.93:1 |
| White text | 10.87:1 |
Values
| HEX | #2B328B |
| RGB | rgb(43, 50, 139) |
| HSL | hsl(236, 53%, 36%) |
| OKLCH | oklch(37.1% 0.146 273.4) |
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 #2B328B | 10.87:1 | AAA | Lc -98.6 | Preferred for body text |
| Black text on #2B328B | 1.93:1 | Fails | Lc 9.2 | Not readable |
| #2B328B text on white | 10.87:1 | AAA | Lc 94.7 | Preferred for body text |
| #2B328B text on black | 1.93:1 | Fails | Lc -7.9 | Not readable |
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 900.
-
Step 50
50
#F2F5FF
oklch(97.1% 0.014 272.7)
-
Step 100
100
#E3E9FF
oklch(93.6% 0.03 273.6)
-
Step 200
200
#CDD7FF
oklch(88.4% 0.056 274.2)
-
Step 300
300
#ACBDFF
oklch(80.9% 0.095 273)
-
Step 400
400
#8397FF
oklch(70.7% 0.153 273.6)
-
Step 500
500
#6679FF
oklch(63.1% 0.198 273.3)
-
Step 600
600
#4F56FD
oklch(55.6% 0.242 273.5)
-
Step 700
700
#4144DD
oklch(49.1% 0.226 273.5)
-
Step 800
800
#353AB2
oklch(42.8% 0.186 273.5)
-
Step 900
900 (this color)
#2B328B
oklch(37.1% 0.146 273.4)
-
Step 950
950
#191F52
oklch(26.8% 0.092 273.4)
#2B328B 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) | #00418E | 0.045 |
| Deuteranopia (no green cones) | #003989 | 0.036 |
| Tritanopia (no blue cones) | #004959 | 0.120 |
| Achromatopsia (no color) | #3D3D3D | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B328B
#2B328B
oklch(37.1% 0.146 273.4)
- #4E3E00
#4E3E00
oklch(37% 0.076 92.3)
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 #2B328B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sapphire #2138AB ΔE 0.055
- Cobalt #1E488F ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.057
- Twilight Blue #0A437A ΔE 0.059
- Blueberry #464196 ΔE 0.062
- Royal #0C1793 ΔE 0.070
- Marine Blue #01386A ΔE 0.070
- Indigo Blue #3A18B1 ΔE 0.073
Use #2B328B 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.