#4F71CD
Closest named color: Windows Blue (#3778BF). oklch(56.9% 0.147 266.5), rgb(79, 113, 205).
Aa
White text reads best on this color (4.58:1).
About this color
#4F71CD is a medium-dark, vivid blue. In OKLCH its lightness is 57%, its chroma 0.147 and its hue 267°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.038 away. White text reads best on it, at 4.58:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | vivid (0.147) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.57:1 |
| White text | 4.58:1 |
Values
| HEX | #4F71CD |
| RGB | rgb(79, 113, 205) |
| HSL | hsl(224, 56%, 56%) |
| OKLCH | oklch(56.9% 0.147 266.5) |
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 #4F71CD | 4.58:1 | AA | Lc -77.1 | Fine for body text |
| Black text on #4F71CD | 4.57:1 | AA | Lc 32.5 | Non-text elements, placeholder text |
| #4F71CD text on white | 4.58:1 | AA | Lc 71.6 | Content text, not long reading |
| #4F71CD text on black | 4.57:1 | AA | Lc -30.0 | 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
#E4EAF7
oklch(93.6% 0.019 266)
-
Step 200
200
#CED9F2
oklch(88.5% 0.036 266.7)
-
Step 300
300
#ADC0EC
oklch(80.8% 0.066 266.6)
-
Step 400
400
#829FE3
oklch(70.8% 0.105 266.1)
-
Step 500
500
#6485DB
oklch(63.1% 0.135 266.7)
-
Step 600
600 (this color)
#4F71CD
oklch(56.9% 0.147 266.5)
-
Step 700
700
#3D5BAD
oklch(49.2% 0.135 266.4)
-
Step 800
800
#324A8C
oklch(42.6% 0.113 266.6)
-
Step 900
900
#2C3F70
oklch(37.8% 0.087 266.3)
-
Step 950
950
#1A2542
oklch(27% 0.056 266.9)
#4F71CD 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) | #467BD0 | 0.026 |
| Deuteranopia (no green cones) | #3270CB | 0.028 |
| Tritanopia (no blue cones) | #008695 | 0.126 |
| Achromatopsia (no color) | #757575 | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4F71CD
#4F71CD
oklch(56.9% 0.147 266.5)
- #957100
#957100
oklch(56.9% 0.116 86.4)
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 #4F71CD, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.038
- Royal Blue #4169E1 ΔE 0.042
- Dark Periwinkle #665FD1 ΔE 0.052
- French Blue #436BAD ΔE 0.053
- Mid Blue #276AB3 ΔE 0.060
- Slate Blue #6A5ACD ΔE 0.063
- Flat Blue #3C73A8 ΔE 0.064
- Iris #6258C4 ΔE 0.064
Use #4F71CD 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.