#4977BC
Closest named color: Windows Blue (#3778BF). oklch(56.9% 0.119 258.3), rgb(73, 119, 188).
Aa
Black text reads best on this color (4.64:1).
About this color
#4977BC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.119 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Windows Blue (#3778BF), ΔE 0.016 away. Black text reads best on it, at 4.64:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.119) |
| Temperature | cool |
| Nearest name | Windows Blue (#3778BF) |
| Black text | 4.64:1 |
| White text | 4.51:1 |
Values
| HEX | #4977BC |
| RGB | rgb(73, 119, 188) |
| HSL | hsl(216, 46%, 51%) |
| OKLCH | oklch(56.9% 0.119 258.3) |
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 #4977BC | 4.51:1 | AA | Lc -76.6 | Fine for body text |
| Black text on #4977BC | 4.64:1 | AA | Lc 32.9 | Non-text elements, placeholder text |
| #4977BC text on white | 4.51:1 | AA | Lc 71.2 | Content text, not long reading |
| #4977BC text on black | 4.64:1 | AA | Lc -30.5 | 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
#F2F6FA
oklch(97.1% 0.007 247.9)
-
Step 100
100
#E4EAF4
oklch(93.5% 0.015 260.7)
-
Step 200
200
#CDDAED
oklch(88.4% 0.03 257.8)
-
Step 300
300
#ACC2E4
oklch(80.9% 0.054 259)
-
Step 400
400
#80A2D6
oklch(70.7% 0.085 258.7)
-
Step 500
500
#5F8ACB
oklch(63% 0.11 258.4)
-
Step 600
600 (this color)
#4977BC
oklch(56.9% 0.119 258.3)
-
Step 700
700
#37609E
oklch(49% 0.11 258.5)
-
Step 800
800
#2E4F80
oklch(42.7% 0.091 258.1)
-
Step 900
900
#294267
oklch(37.7% 0.071 258)
-
Step 950
950
#18273C
oklch(27% 0.044 256.9)
#4977BC 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) | #5A7CBF | 0.025 |
| Deuteranopia (no green cones) | #4A71BB | 0.016 |
| Tritanopia (no blue cones) | #008790 | 0.102 |
| Achromatopsia (no color) | #767676 | 0.119 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4977BC
#4977BC
oklch(56.9% 0.119 258.3)
- #9C6D00
#9C6D00
oklch(56.9% 0.118 78.8)
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 #4977BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Windows Blue #3778BF ΔE 0.016
- Flat Blue #3C73A8 ΔE 0.036
- Steel Blue #4682B4 ΔE 0.036
- Cool Blue #4984B8 ΔE 0.039
- French Blue #436BAD ΔE 0.039
- Nice Blue #107AB0 ΔE 0.043
- Muted Blue #3B719F ΔE 0.050
- Dull Blue #49759C ΔE 0.050
Use #4977BC 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.