#4590BE
Closest named color: Faded Blue (#658CBB). oklch(62.5% 0.102 238.3), rgb(69, 144, 190).
Aa
Black text reads best on this color (5.98:1).
About this color
#4590BE is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.102 and its hue 238°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.031 away. Black text reads best on it, at 5.98:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.102) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 5.98:1 |
| White text | 3.50:1 |
Values
| HEX | #4590BE |
| RGB | rgb(69, 144, 190) |
| HSL | hsl(203, 48%, 51%) |
| OKLCH | oklch(62.5% 0.102 238.3) |
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 #4590BE | 3.50:1 | AA large text | Lc -67.9 | Content text, not long reading |
| Black text on #4590BE | 5.98:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #4590BE text on white | 3.50:1 | AA large text | Lc 62.4 | Content text, not long reading |
| #4590BE text on black | 5.98:1 | AA | Lc -39.3 | 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
#F2F6F9
oklch(97.1% 0.006 239.8)
-
Step 100
100
#E1EBF3
oklch(93.5% 0.015 241.8)
-
Step 200
200
#C9DCEA
oklch(88.5% 0.028 239.7)
-
Step 300
300
#A4C6DE
oklch(81% 0.05 239)
-
Step 400
400
#70A8CD
oklch(70.7% 0.08 238.4)
-
Step 500
500 (this color)
#4590BE
oklch(62.5% 0.102 238.3)
-
Step 600
600
#227BAC
oklch(55.5% 0.111 238.4)
-
Step 700
700
#126894
oklch(49.2% 0.103 238)
-
Step 800
800
#145578
oklch(42.8% 0.085 237.9)
-
Step 900
900
#1A4661
oklch(37.7% 0.067 239.1)
-
Step 950
950
#102939
oklch(26.9% 0.043 239.2)
#4590BE 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) | #7B90C0 | 0.058 |
| Deuteranopia (no green cones) | #6A83BD | 0.048 |
| Tritanopia (no blue cones) | #009CA0 | 0.072 |
| Achromatopsia (no color) | #898989 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4590BE
#4590BE
oklch(62.5% 0.102 238.3)
- #B57846
#B57846
oklch(62.6% 0.101 58.8)
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 #4590BE, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.031
- Cool Blue #4984B8 ΔE 0.033
- Dusty Blue #5A86AD ΔE 0.035
- Off Blue #5684AE ΔE 0.037
- Steel Blue #4682B4 ΔE 0.040
- Blue NCS #118AB2 ΔE 0.040
- Water Blue #0E87CC ΔE 0.048
- Silver Lake Blue #778DA9 ΔE 0.057
Use #4590BE 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.