#4583AC
Closest named color: Steel Blue (#4682B4). oklch(58.6% 0.09 239.7), rgb(69, 131, 172).
Aa
Black text reads best on this color (5.09:1).
About this color
#4583AC is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.090 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Steel Blue (#4682B4), ΔE 0.014 away. Black text reads best on it, at 5.09:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Steel Blue (#4682B4) |
| Black text | 5.09:1 |
| White text | 4.12:1 |
Values
| HEX | #4583AC |
| RGB | rgb(69, 131, 172) |
| HSL | hsl(204, 43%, 47%) |
| OKLCH | oklch(58.6% 0.09 239.7) |
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 #4583AC | 4.12:1 | AA large text | Lc -73.7 | Content text, not long reading |
| Black text on #4583AC | 5.09:1 | AA | Lc 35.9 | Non-text elements, placeholder text |
| #4583AC text on white | 4.12:1 | AA large text | Lc 68.2 | Content text, not long reading |
| #4583AC text on black | 5.09:1 | AA | Lc -33.5 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CCDCE7
oklch(88.6% 0.023 237.7)
-
Step 300
300
#AAC5D9
oklch(81% 0.041 240.1)
-
Step 400
400
#7BA7C5
oklch(70.8% 0.065 238.7)
-
Step 500
500
#5890B7
oklch(63% 0.084 240.3)
-
Step 600
600 (this color)
#4583AC
oklch(58.6% 0.09 239.7)
-
Step 700
700
#2D678B
oklch(49.2% 0.083 238.9)
-
Step 800
800
#275471
oklch(42.8% 0.069 239.4)
-
Step 900
900
#25455B
oklch(37.6% 0.054 240.3)
-
Step 950
950
#162935
oklch(27.1% 0.033 237.5)
#4583AC 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) | #7083AE | 0.049 |
| Deuteranopia (no green cones) | #6278AB | 0.041 |
| Tritanopia (no blue cones) | #008D91 | 0.068 |
| Achromatopsia (no color) | #7D7D7D | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4583AC
#4583AC
oklch(58.6% 0.09 239.7)
- #A36F42
#A36F42
oklch(58.6% 0.09 60.6)
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 #4583AC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Steel Blue #4682B4 ΔE 0.014
- Off Blue #5684AE ΔE 0.018
- Cool Blue #4984B8 ΔE 0.019
- Dusty Blue #5A86AD ΔE 0.024
- Cerulean #457B9D ΔE 0.029
- Stormy Blue #507B9C ΔE 0.029
- Blue NCS #118AB2 ΔE 0.031
- Dull Blue #49759C ΔE 0.042
Use #4583AC 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.