#4B7FCA
Closest named color: Windows Blue (#3778BF). oklch(59.5% 0.128 257.6), rgb(75, 127, 202).
Aa
Black text reads best on this color (5.18:1).
About this color
#4B7FCA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.128 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.032 away. Black text reads best on it, at 5.18:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 5.18:1 |
| White text | 4.04:1 |
Values
| HEX | #4B7FCA |
| RGB | rgb(75, 127, 202) |
| HSL | hsl(215, 55%, 54%) |
| OKLCH | oklch(59.5% 0.128 257.6) |
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 #4B7FCA | 4.04:1 | AA large text | Lc -73.0 | Content text, not long reading |
| Black text on #4B7FCA | 5.18:1 | AA | Lc 36.6 | Non-text elements, placeholder text |
| #4B7FCA text on white | 4.04:1 | AA large text | Lc 67.5 | Content text, not long reading |
| #4B7FCA text on black | 5.18:1 | AA | Lc -34.2 | 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 500.
-
Step 50
50
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E2EBF6
oklch(93.7% 0.018 253.3)
-
Step 200
200
#CBDAF1
oklch(88.4% 0.036 258.9)
-
Step 300
300
#A8C3EA
oklch(81% 0.063 257.5)
-
Step 400
400
#79A2DF
oklch(70.7% 0.101 258.1)
-
Step 500
500 (this color)
#4B7FCA
oklch(59.5% 0.128 257.6)
-
Step 600
600
#3A72C3
oklch(55.5% 0.139 257.8)
-
Step 700
700
#2C60A9
oklch(49.2% 0.13 257.5)
-
Step 800
800
#254E89
oklch(42.6% 0.108 257.8)
-
Step 900
900
#23426D
oklch(37.8% 0.083 257)
-
Step 950
950
#152740
oklch(27.1% 0.053 256.9)
#4B7FCA 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) | #5E85CD | 0.028 |
| Deuteranopia (no green cones) | #4D79C8 | 0.016 |
| Tritanopia (no blue cones) | #00909B | 0.106 |
| Achromatopsia (no color) | #7E7E7E | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4B7FCA
#4B7FCA
oklch(59.5% 0.128 257.6)
- #A77400
#A77400
oklch(59.6% 0.124 78.1)
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 #4B7FCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.032
- Cool Blue #4984B8 ΔE 0.034
- Water Blue #0E87CC ΔE 0.037
- Steel Blue #4682B4 ΔE 0.038
- Off Blue #5684AE ΔE 0.050
- Dark Sky Blue #448EE4 ΔE 0.051
- Dusty Blue #5A86AD ΔE 0.056
- Faded Blue #658CBB ΔE 0.057
Use #4B7FCA 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.