#4751A3
Closest named color: Twilight (#4E518B). oklch(47% 0.131 275), rgb(71, 81, 163).
Aa
White text reads best on this color (7.06:1).
About this color
#4751A3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 47%, its chroma 0.131 and its hue 275°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.040 away. White text reads best on it, at 7.06:1.
| Hue family | Blues |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.131) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.97:1 |
| White text | 7.06:1 |
Values
| HEX | #4751A3 |
| RGB | rgb(71, 81, 163) |
| HSL | hsl(233, 39%, 46%) |
| OKLCH | oklch(47% 0.131 275) |
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 #4751A3 | 7.06:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #4751A3 | 2.97:1 | Fails | Lc 19.8 | Dividers and decoration only |
| #4751A3 text on white | 7.06:1 | AAA | Lc 84.3 | Fine for body text |
| #4751A3 text on black | 2.97:1 | Fails | Lc -17.7 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F5FB
oklch(97.1% 0.008 278.6)
-
Step 100
100
#E6E9F7
oklch(93.6% 0.019 276.3)
-
Step 200
200
#D2D8F1
oklch(88.5% 0.035 274.9)
-
Step 300
300
#B4BEEA
oklch(80.9% 0.063 274.9)
-
Step 400
400
#8E9BE0
oklch(70.6% 0.102 275.3)
-
Step 500
500
#7381D7
oklch(63% 0.13 275.1)
-
Step 600
600
#5D69C4
oklch(55.6% 0.14 275.2)
-
Step 700
700 (this color)
#4751A3
oklch(47% 0.131 275)
-
Step 800
800
#3F4889
oklch(42.8% 0.107 275)
-
Step 900
900
#353D6E
oklch(37.8% 0.084 274.7)
-
Step 950
950
#1F2440
oklch(27% 0.052 274.7)
#4751A3 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) | #285DA6 | 0.042 |
| Deuteranopia (no green cones) | #1A55A1 | 0.045 |
| Tritanopia (no blue cones) | #156372 | 0.115 |
| Achromatopsia (no color) | #585858 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4751A3
#4751A3
oklch(47% 0.131 275)
- #6C5900
#6C5900
oklch(46.9% 0.096 94.5)
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 #4751A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.044
- Blueberry #464196 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.050
- Dusk Blue #26538D ΔE 0.054
- Dusk #4E5481 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.061
- Light Navy Blue #2E5A88 ΔE 0.062
Use #4751A3 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.