#5778AF
Closest named color: Steel Blue (#4682B4). oklch(57.1% 0.094 260.3), rgb(87, 120, 175).
Aa
Black text reads best on this color (4.71:1).
About this color
#5778AF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 57%, its chroma 0.094 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.030 away. Black text reads best on it, at 4.71:1.
| Hue family | Blues |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 4.71:1 |
| White text | 4.45:1 |
Values
| HEX | #5778AF |
| RGB | rgb(87, 120, 175) |
| HSL | hsl(218, 35%, 51%) |
| OKLCH | oklch(57.1% 0.094 260.3) |
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 #5778AF | 4.45:1 | AA large text | Lc -76.3 | Fine for body text |
| Black text on #5778AF | 4.71:1 | AA | Lc 33.2 | Non-text elements, placeholder text |
| #5778AF text on white | 4.45:1 | AA large text | Lc 70.8 | Content text, not long reading |
| #5778AF text on black | 4.71:1 | AA | Lc -30.8 | 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
#F3F6F9
oklch(97.2% 0.005 247.9)
-
Step 100
100
#E5EAF2
oklch(93.6% 0.012 259.8)
-
Step 200
200
#D0DAE9
oklch(88.5% 0.023 258.4)
-
Step 300
300
#B1C2DC
oklch(81% 0.041 258.8)
-
Step 400
400
#88A2CB
oklch(70.7% 0.067 259.4)
-
Step 500
500
#6B8ABE
oklch(63.1% 0.086 260.5)
-
Step 600
600 (this color)
#5778AF
oklch(57.1% 0.094 260.3)
-
Step 700
700
#436192
oklch(49.2% 0.087 259.8)
-
Step 800
800
#374F76
oklch(42.6% 0.072 259.8)
-
Step 900
900
#30425F
oklch(37.7% 0.055 259.7)
-
Step 950
950
#1C2738
oklch(27.1% 0.035 258.9)
#5778AF 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) | #637CB1 | 0.020 |
| Deuteranopia (no green cones) | #5974AE | 0.011 |
| Tritanopia (no blue cones) | #2F848C | 0.083 |
| Achromatopsia (no color) | #777777 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5778AF
#5778AF
oklch(57.1% 0.094 260.3)
- #947130
#947130
oklch(57% 0.093 80.4)
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 #5778AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.030
- Cool Blue #4984B8 ΔE 0.034
- Stormy Blue #507B9C ΔE 0.035
- Off Blue #5684AE ΔE 0.035
- Dull Blue #49759C ΔE 0.035
- Flat Blue #3C73A8 ΔE 0.035
- Cerulean #457B9D ΔE 0.038
- Windows Blue #3778BF ΔE 0.038
Use #5778AF 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.