#4D71A3
Closest named color: Flat Blue (#3C73A8). oklch(54.4% 0.089 256.8), rgb(77, 113, 163).
Aa
White text reads best on this color (4.99:1).
About this color
#4D71A3 is a medium-dark, moderately saturated blue. In OKLCH its lightness is 54%, its chroma 0.089 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.018 away. White text reads best on it, at 4.99:1.
| Hue family | Blues |
| Lightness | medium-dark (54%) |
| Chroma | moderately saturated (0.089) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.20:1 |
| White text | 4.99:1 |
Values
| HEX | #4D71A3 |
| RGB | rgb(77, 113, 163) |
| HSL | hsl(215, 36%, 47%) |
| OKLCH | oklch(54.4% 0.089 256.8) |
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 #4D71A3 | 4.99:1 | AA | Lc -79.8 | Fine for body text |
| Black text on #4D71A3 | 4.20:1 | AA large text | Lc 29.7 | Dividers and decoration only |
| #4D71A3 text on white | 4.99:1 | AA | Lc 74.4 | Content text, not long reading |
| #4D71A3 text on black | 4.20:1 | AA large text | Lc -27.3 | 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 600.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE8
oklch(88.5% 0.022 256.7)
-
Step 300
300
#B0C2DB
oklch(80.8% 0.041 256.6)
-
Step 400
400
#87A3C9
oklch(70.8% 0.064 256.1)
-
Step 500
500
#698BBB
oklch(63% 0.082 257)
-
Step 600
600 (this color)
#4D71A3
oklch(54.4% 0.089 256.8)
-
Step 700
700
#41628F
oklch(49.1% 0.082 256.4)
-
Step 800
800
#365074
oklch(42.7% 0.068 256.7)
-
Step 900
900
#2F425E
oklch(37.6% 0.054 257.9)
-
Step 950
950
#1C2737
oklch(27% 0.034 257.7)
#4D71A3 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) | #5D74A5 | 0.023 |
| Deuteranopia (no green cones) | #536CA2 | 0.015 |
| Tritanopia (no blue cones) | #217C83 | 0.078 |
| Achromatopsia (no color) | #6F6F6F | 0.089 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D71A3
#4D71A3
oklch(54.4% 0.089 256.8)
- #8D682D
#8D682D
oklch(54.3% 0.089 76.4)
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 #4D71A3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.018
- Dull Blue #49759C ΔE 0.019
- Muted Blue #3B719F ΔE 0.020
- French Blue #436BAD ΔE 0.029
- Cerulean #457B9D ΔE 0.033
- Stormy Blue #507B9C ΔE 0.035
- Metallic Blue #4F738E ΔE 0.036
- Nice Blue #107AB0 ΔE 0.045
Use #4D71A3 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.