#2A276F
Closest named color: Midnight Blue (#191970). oklch(32.4% 0.121 279.1), rgb(42, 39, 111).
Aa
White text reads best on this color (12.97:1).
About this color
#2A276F is a dark, moderately saturated blue. In OKLCH its lightness is 32%, its chroma 0.121 and its hue 279°. Its hue sits on the cool side of the wheel. The nearest named color is Midnight Blue (#191970), ΔE 0.045 away. White text reads best on it, at 12.97:1.
| Hue family | Blues |
| Lightness | dark (32%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Midnight Blue (#191970) |
| Black text | 1.61:1 |
| White text | 12.97:1 |
Values
| HEX | #2A276F |
| RGB | rgb(42, 39, 111) |
| HSL | hsl(243, 48%, 29%) |
| OKLCH | oklch(32.4% 0.121 279.1) |
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 #2A276F | 12.97:1 | AAA | Lc -102.2 | Preferred for body text |
| Black text on #2A276F | 1.61:1 | Fails | Lc 0.0 | Not readable |
| #2A276F text on white | 12.97:1 | AAA | Lc 98.8 | Preferred for body text |
| #2A276F text on black | 1.61:1 | 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 900.
-
Step 50
50
#F3F5FE
oklch(97.1% 0.012 276.1)
-
Step 100
100
#E6E8FC
oklch(93.5% 0.027 281.3)
-
Step 200
200
#D1D6FB
oklch(88.4% 0.051 279.2)
-
Step 300
300
#B4BBFB
oklch(80.9% 0.091 279.3)
-
Step 400
400
#8E95F9
oklch(70.7% 0.145 279)
-
Step 500
500
#7577F6
oklch(63.1% 0.185 279)
-
Step 600
600
#605CE4
oklch(55.6% 0.2 279)
-
Step 700
700
#504AC6
oklch(49% 0.187 279.1)
-
Step 800
800
#413EA0
oklch(42.7% 0.154 279)
-
Step 900
900 (this color)
#2A276F
oklch(32.4% 0.121 279.1)
-
Step 950
950
#20204B
oklch(27% 0.078 279.9)
#2A276F 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) | #003471 | 0.048 |
| Deuteranopia (no green cones) | #002E6E | 0.043 |
| Tritanopia (no blue cones) | #003947 | 0.103 |
| Achromatopsia (no color) | #313131 | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2A276F
#2A276F
oklch(32.4% 0.121 279.1)
- #3C3400
#3C3400
oklch(32.4% 0.067 99.8)
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 #2A276F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Midnight Blue #191970 ΔE 0.045
- Marine #042E60 ΔE 0.051
- Marine Blue #01386A ΔE 0.057
- Prussian Blue #1D3557 ΔE 0.063
- Twilight Blue #0A437A ΔE 0.078
- Royal #0C1793 ΔE 0.079
- Indigo #4B0082 ΔE 0.084
- Royal Purple #4B006E ΔE 0.084
Use #2A276F 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.