#271B4F
Closest named color: Dark Indigo (#1F0954). oklch(27% 0.091 289.5), rgb(39, 27, 79).
Aa
White text reads best on this color (15.48:1).
About this color
#271B4F is a dark, moderately saturated purple. In OKLCH its lightness is 27%, its chroma 0.091 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Indigo (#1F0954), ΔE 0.044 away. White text reads best on it, at 15.48:1.
| Hue family | Purples |
| Lightness | dark (27%) |
| Chroma | moderately saturated (0.091) |
| Temperature | cool |
| Nearest name | Dark Indigo (#1F0954) |
| Black text | 1.35:1 |
| White text | 15.48:1 |
Values
| HEX | #271B4F |
| RGB | rgb(39, 27, 79) |
| HSL | hsl(254, 49%, 21%) |
| OKLCH | oklch(27% 0.091 289.5) |
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 #271B4F | 15.48:1 | AAA | Lc -104.9 | Preferred for body text |
| Black text on #271B4F | 1.35:1 | Fails | Lc 0.0 | Not readable |
| #271B4F text on white | 15.48:1 | AAA | Lc 102.2 | Preferred for body text |
| #271B4F text on black | 1.35:1 | 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
#F5F4FF
oklch(97.1% 0.015 290.3)
-
Step 100
100
#E9E7FE
oklch(93.6% 0.031 289.8)
-
Step 200
200
#D7D3FF
oklch(88.4% 0.06 289.3)
-
Step 300
300
#BFB6FF
oklch(81% 0.102 289.6)
-
Step 400
400
#A08CFF
oklch(70.8% 0.164 289.5)
-
Step 500
500
#8B69FF
oklch(63.1% 0.213 289.3)
-
Step 600
600
#7846F2
oklch(55.5% 0.24 289.5)
-
Step 700
700
#6635D3
oklch(49.1% 0.223 289.7)
-
Step 800
800
#522EAB
oklch(42.7% 0.186 289.2)
-
Step 900
900
#432C87
oklch(37.7% 0.144 289.2)
-
Step 950
950 (this color)
#271B4F
oklch(27% 0.091 289.5)
#271B4F 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) | #002551 | 0.053 |
| Deuteranopia (no green cones) | #00234E | 0.053 |
| Tritanopia (no blue cones) | #1B2732 | 0.074 |
| Achromatopsia (no color) | #242424 | 0.092 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #271B4F
#271B4F
oklch(27% 0.091 289.5)
- #292800
#292800
oklch(26.9% 0.058 108.3)
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 #271B4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Indigo #1F0954 ΔE 0.044
- Oxford Blue #1B263B ΔE 0.057
- Dark Purple #35063E ΔE 0.059
- Space Cadet #2B2D42 ΔE 0.065
- Midnight Blue #191970 ΔE 0.065
- Deep Purple #36013F ΔE 0.066
- Marine #042E60 ΔE 0.066
- Eggplant #380835 ΔE 0.070
Use #271B4F 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.