#4588AA
Closest named color: Off Blue (#5684AE). oklch(59.7% 0.086 232.8), rgb(69, 136, 170).
Aa
Black text reads best on this color (5.35:1).
About this color
#4588AA is a medium-dark, moderately saturated blue. In OKLCH its lightness is 60%, its chroma 0.086 and its hue 233°. Its hue sits on the cool side of the wheel. The nearest named color is Off Blue (#5684AE), ΔE 0.021 away. Black text reads best on it, at 5.35:1.
| Hue family | Blues |
| Lightness | medium-dark (60%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Off Blue (#5684AE) |
| Black text | 5.35:1 |
| White text | 3.92:1 |
Values
| HEX | #4588AA |
| RGB | rgb(69, 136, 170) |
| HSL | hsl(200, 42%, 47%) |
| OKLCH | oklch(59.7% 0.086 232.8) |
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 #4588AA | 3.92:1 | AA large text | Lc -71.9 | Content text, not long reading |
| Black text on #4588AA | 5.35:1 | AA | Lc 37.6 | Non-text elements, placeholder text |
| #4588AA text on white | 3.92:1 | AA large text | Lc 66.4 | Content text, not long reading |
| #4588AA text on black | 5.35:1 | AA | Lc -35.2 | 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
#E2EBF1
oklch(93.5% 0.013 236.6)
-
Step 200
200
#CBDCE6
oklch(88.5% 0.023 233.4)
-
Step 300
300
#A7C6D8
oklch(81% 0.042 233.5)
-
Step 400
400
#76A8C4
oklch(70.6% 0.067 233.5)
-
Step 500
500 (this color)
#4588AA
oklch(59.7% 0.086 232.8)
-
Step 600
600
#307CA1
oklch(55.6% 0.093 233.2)
-
Step 700
700
#21698A
oklch(49.2% 0.087 232.6)
-
Step 800
800
#1E5570
oklch(42.6% 0.072 233.6)
-
Step 900
900
#1F475A
oklch(37.8% 0.055 231.4)
-
Step 950
950
#132935
oklch(26.9% 0.036 234.1)
#4588AA 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) | #7786AC | 0.056 |
| Deuteranopia (no green cones) | #697CA9 | 0.048 |
| Tritanopia (no blue cones) | #009193 | 0.060 |
| Achromatopsia (no color) | #818181 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #4588AA
#4588AA
oklch(59.7% 0.086 232.8)
- #A8714E
#A8714E
oklch(59.8% 0.085 52.9)
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 #4588AA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Off Blue #5684AE ΔE 0.021
- Dusty Blue #5A86AD ΔE 0.022
- Steel Blue #4682B4 ΔE 0.027
- Cool Blue #4984B8 ΔE 0.028
- Blue NCS #118AB2 ΔE 0.028
- Stormy Blue #507B9C ΔE 0.038
- Teal Blue #01889F ΔE 0.038
- Cerulean #457B9D ΔE 0.039
Use #4588AA 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.