#5F71D2
Closest named color: Dark Periwinkle (#665FD1). oklch(58.2% 0.149 273), rgb(95, 113, 210).
Aa
Black text reads best on this color (4.77:1).
About this color
#5F71D2 is a medium-dark, vivid blue. In OKLCH its lightness is 58%, its chroma 0.149 and its hue 273°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Periwinkle (#665FD1), ΔE 0.044 away. Black text reads best on it, at 4.77:1.
| Hue family | Blues |
| Lightness | medium-dark (58%) |
| Chroma | vivid (0.149) |
| Temperature | cool |
| Nearest name | Dark Periwinkle (#665FD1) |
| Black text | 4.77:1 |
| White text | 4.39:1 |
Values
| HEX | #5F71D2 |
| RGB | rgb(95, 113, 210) |
| HSL | hsl(231, 56%, 60%) |
| OKLCH | oklch(58.2% 0.149 273) |
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 #5F71D2 | 4.39:1 | AA large text | Lc -75.7 | Fine for body text |
| Black text on #5F71D2 | 4.77:1 | AA | Lc 33.8 | Non-text elements, placeholder text |
| #5F71D2 text on white | 4.39:1 | AA large text | Lc 70.3 | Content text, not long reading |
| #5F71D2 text on black | 4.77:1 | AA | Lc -31.4 | Non-text elements, placeholder text |
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 600.
-
Step 50
50
#F3F5FC
oklch(97.1% 0.01 273.4)
-
Step 100
100
#E5E9F7
oklch(93.5% 0.019 273.2)
-
Step 200
200
#D1D8F3
oklch(88.5% 0.038 274.1)
-
Step 300
300
#B2BEED
oklch(80.8% 0.068 273.6)
-
Step 400
400
#8A9CE4
oklch(70.7% 0.108 272.7)
-
Step 500
500
#6F82DC
oklch(63.2% 0.137 272.9)
-
Step 600
600 (this color)
#5F71D2
oklch(58.2% 0.149 273)
-
Step 700
700
#4857AE
oklch(49.1% 0.139 272.9)
-
Step 800
800
#3B488D
oklch(42.8% 0.114 272.7)
-
Step 900
900
#323D71
oklch(37.8% 0.09 272.4)
-
Step 950
950
#1D2442
oklch(27% 0.057 272.2)
#5F71D2 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) | #457ED6 | 0.040 |
| Deuteranopia (no green cones) | #3674D0 | 0.042 |
| Tritanopia (no blue cones) | #228697 | 0.132 |
| Achromatopsia (no color) | #787878 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F71D2
#5F71D2
oklch(58.2% 0.149 273)
- #937800
#937800
oklch(58.1% 0.119 93.1)
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 #5F71D2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Periwinkle #665FD1 ΔE 0.044
- Royal Blue #4169E1 ΔE 0.049
- Windows Blue #3778BF ΔE 0.055
- Slate Blue #6A5ACD ΔE 0.056
- Light Indigo #6D5ACF ΔE 0.057
- Cornflower #6A79F7 ΔE 0.060
- Medium Slate Blue #7B68EE ΔE 0.062
- Iris #6258C4 ΔE 0.063
Use #5F71D2 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.