#4778AA
Closest named color: Flat Blue (#3C73A8). oklch(56% 0.095 250.3), rgb(71, 120, 170).
Aa
White text reads best on this color (4.63:1).
About this color
#4778AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 56%, its chroma 0.095 and its hue 250°. 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 4.63:1.
| Hue family | Blues |
| Lightness | medium-dark (56%) |
| Chroma | moderately saturated (0.095) |
| Temperature | cool |
| Nearest name | Flat Blue (#3C73A8) |
| Black text | 4.53:1 |
| White text | 4.63:1 |
Values
| HEX | #4778AA |
| RGB | rgb(71, 120, 170) |
| HSL | hsl(210, 41%, 47%) |
| OKLCH | oklch(56% 0.095 250.3) |
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 #4778AA | 4.63:1 | AA | Lc -77.5 | Fine for body text |
| Black text on #4778AA | 4.53:1 | AA | Lc 32.1 | Non-text elements, placeholder text |
| #4778AA text on white | 4.63:1 | AA | Lc 72.0 | Content text, not long reading |
| #4778AA text on black | 4.53:1 | AA | Lc -29.7 | 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 600.
-
Step 50
50
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E4EBF2
oklch(93.7% 0.012 248)
-
Step 200
200
#CEDBE9
oklch(88.6% 0.024 250.1)
-
Step 300
300
#ADC3DC
oklch(80.9% 0.043 251.7)
-
Step 400
400
#81A4CA
oklch(70.7% 0.068 250.9)
-
Step 500
500
#608DBC
oklch(63% 0.087 250.4)
-
Step 600
600 (this color)
#4778AA
oklch(56% 0.095 250.3)
-
Step 700
700
#376491
oklch(49.2% 0.088 250)
-
Step 800
800
#2E5175
oklch(42.6% 0.073 250.5)
-
Step 900
900
#29445F
oklch(37.8% 0.057 249.6)
-
Step 950
950
#192837
oklch(27.1% 0.035 249.2)
#4778AA 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) | #637AAC | 0.034 |
| Deuteranopia (no green cones) | #5670A9 | 0.026 |
| Tritanopia (no blue cones) | #00848A | 0.080 |
| Achromatopsia (no color) | #757575 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4778AA
#4778AA
oklch(56% 0.095 250.3)
- #986A30
#986A30
oklch(56.1% 0.095 69.9)
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 #4778AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Blue #3C73A8 ΔE 0.019
- Dull Blue #49759C ΔE 0.022
- Cerulean #457B9D ΔE 0.025
- Stormy Blue #507B9C ΔE 0.027
- Muted Blue #3B719F ΔE 0.029
- Steel Blue #4682B4 ΔE 0.029
- Nice Blue #107AB0 ΔE 0.034
- Windows Blue #3778BF ΔE 0.035
Use #4778AA 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.