#2A2570
Closest named color: Midnight Blue (#191970). oklch(32.1% 0.125 279.7), rgb(42, 37, 112).
Aa
White text reads best on this color (13.14:1).
About this color
#2A2570 is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.125 and its hue 280°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.041 away. White text reads best on it, at 13.14:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.125) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.59:1 |
| White text | 13.14:1 |
Values
| HEX | #2A2570 |
| RGB | rgb(42, 37, 112) |
| HSL | hsl(244, 50%, 29%) |
| OKLCH | oklch(32.1% 0.125 279.7) |
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 #2A2570 | 13.14:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #2A2570 | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #2A2570 text on white | 13.14:1 | AAA | Lc 99.1 | Preferred for body text |
| #2A2570 text on black | 1.59:1 | Fails | Lc 0.0 | 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 950.
-
Step 50
50
#F3F5FF
oklch(97.2% 0.013 277.1)
-
Step 100
100
#E5E8FF
oklch(93.6% 0.031 279.9)
-
Step 200
200
#D1D6FF
oklch(88.5% 0.057 279.7)
-
Step 300
300
#B3BAFF
oklch(80.8% 0.098 279.5)
-
Step 400
400
#8E93FF
oklch(70.6% 0.156 279.6)
-
Step 500
500
#7673FF
oklch(63.1% 0.202 279.9)
-
Step 600
600
#614CFF
oklch(55.5% 0.251 279.7)
-
Step 700
700
#5509FF
oklch(49.1% 0.294 279.8)
-
Step 800
800
#450BD2
oklch(42.7% 0.253 279.9)
-
Step 900
900
#371EA5
oklch(37.7% 0.197 279.6)
-
Step 950
950 (this color)
#2A2570
oklch(32.1% 0.125 279.7)
#2A2570 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) | #003372 | 0.049 |
| Deuteranopia (no green cones) | #002D6F | 0.045 |
| Tritanopia (no blue cones) | #003847 | 0.106 |
| Achromatopsia (no color) | #303030 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A2570
#2A2570
oklch(32.1% 0.125 279.7)
- #3B3300
#3B3300
oklch(32% 0.066 99.7)
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 #2A2570, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.041
- Marine #042E60 ΔE 0.054
- Marine Blue #01386A ΔE 0.061
- Prussian Blue #1D3557 ΔE 0.068
- Royal #0C1793 ΔE 0.076
- Indigo #4B0082 ΔE 0.081
- Royal Purple #4B006E ΔE 0.082
- Twilight Blue #0A437A ΔE 0.082
Use #2A2570 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.