#4582CB
Closest named color: Water Blue (#0E87CC). oklch(60% 0.129 254.2), rgb(69, 130, 203).
Aa
Black text reads best on this color (5.30:1).
About this color
#4582CB is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.129 and its hue 254°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.029 away. Black text reads best on it, at 5.30:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.30:1 |
| White text | 3.95:1 |
Values
| HEX | #4582CB |
| RGB | rgb(69, 130, 203) |
| HSL | hsl(213, 56%, 53%) |
| OKLCH | oklch(60% 0.129 254.2) |
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 #4582CB | 3.95:1 | AA large text | Lc -72.2 | Content text, not long reading |
| Black text on #4582CB | 5.30:1 | AA | Lc 37.4 | Non-text elements, placeholder text |
| #4582CB text on white | 3.95:1 | AA large text | Lc 66.7 | Content text, not long reading |
| #4582CB text on black | 5.30:1 | AA | Lc -35.0 | 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
#CADBF0
oklch(88.5% 0.034 253.7)
-
Step 300
300
#A5C3E9
oklch(80.8% 0.063 254.5)
-
Step 400
400
#74A4DE
oklch(70.8% 0.1 253.7)
-
Step 500
500 (this color)
#4582CB
oklch(60% 0.129 254.2)
-
Step 600
600
#3074C3
oklch(55.6% 0.141 254.4)
-
Step 700
700
#2261A8
oklch(49.1% 0.13 254.2)
-
Step 800
800
#1E5088
oklch(42.8% 0.107 253.7)
-
Step 900
900
#1F426D
oklch(37.6% 0.085 254.8)
-
Step 950
950
#132740
oklch(27% 0.054 254.9)
#4582CB 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) | #6287CE | 0.035 |
| Deuteranopia (no green cones) | #4F7ACA | 0.022 |
| Tritanopia (no blue cones) | #00939D | 0.102 |
| Achromatopsia (no color) | #808080 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4582CB
#4582CB
oklch(60% 0.129 254.2)
- #AC7300
#AC7300
oklch(60% 0.127 74.6)
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 #4582CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.029
- Cool Blue #4984B8 ΔE 0.031
- Windows Blue #3778BF ΔE 0.035
- Steel Blue #4682B4 ΔE 0.036
- Dark Sky Blue #448EE4 ΔE 0.045
- Off Blue #5684AE ΔE 0.049
- Dusty Blue #5A86AD ΔE 0.054
- Faded Blue #658CBB ΔE 0.054
Use #4582CB 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.