#4590CB
Closest named color: Faded Blue (#658CBB). oklch(63.2% 0.116 244.9), rgb(69, 144, 203).
Aa
Black text reads best on this color (6.10:1).
About this color
#4590CB is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.116 and its hue 245°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.036 away. Black text reads best on it, at 6.10:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.10:1 |
| White text | 3.43:1 |
Values
| HEX | #4590CB |
| RGB | rgb(69, 144, 203) |
| HSL | hsl(206, 56%, 53%) |
| OKLCH | oklch(63.2% 0.116 244.9) |
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 #4590CB | 3.43:1 | AA large text | Lc -67.1 | Content text, not long reading |
| Black text on #4590CB | 6.10:1 | AA | Lc 42.4 | Non-text elements, placeholder text |
| #4590CB text on white | 3.43:1 | AA large text | Lc 61.7 | Content text, not long reading |
| #4590CB text on black | 6.10:1 | AA | Lc -40.0 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1EBF4
oklch(93.5% 0.016 245.1)
-
Step 200
200
#C9DCED
oklch(88.6% 0.031 245.1)
-
Step 300
300
#A3C5E3
oklch(80.9% 0.056 245.2)
-
Step 400
400
#6FA7D6
oklch(70.8% 0.091 244.9)
-
Step 500
500 (this color)
#4590CB
oklch(63.2% 0.116 244.9)
-
Step 600
600
#2079B8
oklch(55.7% 0.126 245.1)
-
Step 700
700
#0F659E
oklch(49% 0.118 245.2)
-
Step 800
800
#125380
oklch(42.7% 0.097 244.7)
-
Step 900
900
#184567
oklch(37.7% 0.076 244.8)
-
Step 950
950
#10293C
oklch(27.1% 0.047 243.8)
#4590CB 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) | #7692CE | 0.052 |
| Deuteranopia (no green cones) | #6384CA | 0.040 |
| Tritanopia (no blue cones) | #009EA5 | 0.085 |
| Achromatopsia (no color) | #8A8A8A | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4590CB
#4590CB
oklch(63.2% 0.116 244.9)
- #B97934
#B97934
oklch(63% 0.116 64.7)
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 #4590CB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.036
- Cool Blue #4984B8 ΔE 0.039
- Dark Sky Blue #448EE4 ΔE 0.040
- Water Blue #0E87CC ΔE 0.041
- Steel Blue #4682B4 ΔE 0.047
- Dusty Blue #5A86AD ΔE 0.048
- Off Blue #5684AE ΔE 0.049
- Blue NCS #118AB2 ΔE 0.052
Use #4590CB 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.