#4D72AC
Closest named color: Flat Blue (#3C73A8). oklch(55.1% 0.1 259.1), rgb(77, 114, 172).
Aa
White text reads best on this color (4.86:1).
About this color
#4D72AC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 55%, its chroma 0.100 and its hue 259°. Its hue sits on the cool side of the wheel. The nearest named color is Flat Blue (#3C73A8), ΔE 0.019 away. White text reads best on it, at 4.86:1.
| Hue family | Blues |
| Lightness | medium-dark (55%) |
| Chroma | moderately saturated (0.100) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.31:1 |
| White text | 4.86:1 |
Values
| HEX | #4D72AC |
| RGB | rgb(77, 114, 172) |
| HSL | hsl(217, 38%, 49%) |
| OKLCH | oklch(55.1% 0.1 259.1) |
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 #4D72AC | 4.86:1 | AA | Lc -79.0 | Fine for body text |
| Black text on #4D72AC | 4.31:1 | AA large text | Lc 30.5 | Non-text elements, placeholder text |
| #4D72AC text on white | 4.86:1 | AA | Lc 73.6 | Content text, not long reading |
| #4D72AC text on black | 4.31:1 | AA large text | Lc -28.1 | 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
#F3F6FA
oklch(97.2% 0.006 255.5)
-
Step 100
100
#E5EAF3
oklch(93.6% 0.013 262.4)
-
Step 200
200
#CFDAEA
oklch(88.5% 0.025 257.6)
-
Step 300
300
#AFC2DE
oklch(80.9% 0.045 258)
-
Step 400
400
#86A2CE
oklch(70.7% 0.072 259.3)
-
Step 500
500
#678AC1
oklch(63% 0.092 259.2)
-
Step 600
600 (this color)
#4D72AC
oklch(55.1% 0.1 259.1)
-
Step 700
700
#3F6195
oklch(49.1% 0.093 258.6)
-
Step 800
800
#344F79
oklch(42.6% 0.078 258.9)
-
Step 900
900
#2E4261
oklch(37.7% 0.059 258.9)
-
Step 950
950
#1B2739
oklch(27.1% 0.038 258.3)
#4D72AC 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) | #5B76AE | 0.022 |
| Deuteranopia (no green cones) | #4F6DAB | 0.014 |
| Tritanopia (no blue cones) | #137F87 | 0.090 |
| Achromatopsia (no color) | #717171 | 0.100 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4D72AC
#4D72AC
oklch(55.1% 0.1 259.1)
- #916A21
#916A21
oklch(55.1% 0.1 79)
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 #4D72AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.019
- French Blue #436BAD ΔE 0.025
- Muted Blue #3B719F ΔE 0.029
- Dull Blue #49759C ΔE 0.030
- Windows Blue #3778BF ΔE 0.034
- Cerulean #457B9D ΔE 0.040
- Stormy Blue #507B9C ΔE 0.041
- Nice Blue #107AB0 ΔE 0.043
Use #4D72AC 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.