#598FAB
Closest named color: Dusty Blue (#5A86AD). oklch(62.3% 0.071 232.1), rgb(89, 143, 171).
Aa
Black text reads best on this color (5.94:1).
About this color
#598FAB is a medium-light, moderately saturated blue. In OKLCH its lightness is 62%, its chroma 0.071 and its hue 232°. Its hue sits on the cool side of the wheel. The nearest named color is Dusty Blue (#5A86AD), ΔE 0.027 away. Black text reads best on it, at 5.94:1.
| Hue family | Blues |
| Lightness | medium-light (62%) |
| Chroma | moderately saturated (0.071) |
| Temperature | cool |
| Nearest name | Dusty Blue (#5A86AD) |
| Black text | 5.94:1 |
| White text | 3.53:1 |
Values
| HEX | #598FAB |
| RGB | rgb(89, 143, 171) |
| HSL | hsl(200, 33%, 51%) |
| OKLCH | oklch(62.3% 0.071 232.1) |
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 #598FAB | 3.53:1 | AA large text | Lc -68.3 | Content text, not long reading |
| Black text on #598FAB | 5.94:1 | AA | Lc 41.3 | Non-text elements, placeholder text |
| #598FAB text on white | 3.53:1 | AA large text | Lc 62.8 | Content text, not long reading |
| #598FAB text on black | 5.94:1 | AA | Lc -38.9 | 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
#F2F6F8
oklch(97.1% 0.005 228.8)
-
Step 100
100
#E4EBEF
oklch(93.6% 0.009 232.4)
-
Step 200
200
#CDDCE4
oklch(88.6% 0.02 230.7)
-
Step 300
300
#ABC5D4
oklch(80.9% 0.035 233.2)
-
Step 400
400
#7EA7BE
oklch(70.7% 0.056 233.1)
-
Step 500
500 (this color)
#598FAB
oklch(62.3% 0.071 232.1)
-
Step 600
600
#3F7B99
oklch(55.5% 0.078 232.3)
-
Step 700
700
#316883
oklch(49.2% 0.072 232.2)
-
Step 800
800
#2A556A
oklch(42.8% 0.059 231.6)
-
Step 900
900
#264656
oklch(37.7% 0.047 231.6)
-
Step 950
950
#172932
oklch(27% 0.029 231)
#598FAB 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) | #818DAC | 0.048 |
| Deuteranopia (no green cones) | #7684AB | 0.044 |
| Tritanopia (no blue cones) | #329798 | 0.054 |
| Achromatopsia (no color) | #888888 | 0.071 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #598FAB
#598FAB
oklch(62.3% 0.071 232.1)
- #AA7B5F
#AA7B5F
oklch(62.3% 0.071 51.8)
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 #598FAB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Blue #5A86AD ΔE 0.027
- Faded Blue #658CBB ΔE 0.032
- Blue Grey #758DA3 ΔE 0.033
- Off Blue #5684AE ΔE 0.034
- Silver Lake Blue #778DA9 ΔE 0.034
- Light Slate Gray #778899 ΔE 0.041
- Steel #738595 ΔE 0.043
- Cool Blue #4984B8 ΔE 0.046
Use #598FAB 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.