#598FB7
Closest named color: Faded Blue (#658CBB). oklch(62.9% 0.083 241.9), rgb(89, 143, 183).
Aa
Black text reads best on this color (6.03:1).
About this color
#598FB7 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.083 and its hue 242°. Its hue sits on the cool side of the wheel. The nearest named color is Faded Blue (#658CBB), ΔE 0.017 away. Black text reads best on it, at 6.03:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Faded Blue (#658CBB) |
| Black text | 6.03:1 |
| White text | 3.47:1 |
Values
| HEX | #598FB7 |
| RGB | rgb(89, 143, 183) |
| HSL | hsl(206, 39%, 53%) |
| OKLCH | oklch(62.9% 0.083 241.9) |
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 #598FB7 | 3.47:1 | AA large text | Lc -67.7 | Content text, not long reading |
| Black text on #598FB7 | 6.03:1 | AA | Lc 41.9 | Non-text elements, placeholder text |
| #598FB7 text on white | 3.47:1 | AA large text | Lc 62.2 | Content text, not long reading |
| #598FB7 text on black | 6.03:1 | AA | Lc -39.5 | 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
#E3EBF1
oklch(93.6% 0.012 239.9)
-
Step 200
200
#CDDBE7
oklch(88.4% 0.022 243.8)
-
Step 300
300
#AAC4D9
oklch(80.8% 0.041 242.5)
-
Step 400
400
#7CA6C6
oklch(70.6% 0.065 241.7)
-
Step 500
500 (this color)
#598FB7
oklch(62.9% 0.083 241.9)
-
Step 600
600
#3E79A4
oklch(55.5% 0.091 242.5)
-
Step 700
700
#2F668C
oklch(49.1% 0.084 241.5)
-
Step 800
800
#285372
oklch(42.6% 0.07 242.3)
-
Step 900
900
#26455C
oklch(37.7% 0.054 242.2)
-
Step 950
950
#172936
oklch(27.2% 0.034 241)
#598FB7 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) | #7E8FB9 | 0.044 |
| Deuteranopia (no green cones) | #7185B6 | 0.037 |
| Tritanopia (no blue cones) | #26999C | 0.069 |
| Achromatopsia (no color) | #898989 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #598FB7
#598FB7
oklch(62.9% 0.083 241.9)
- #AD7D53
#AD7D53
oklch(62.8% 0.083 61.6)
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 #598FB7, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Faded Blue #658CBB ΔE 0.017
- Dusty Blue #5A86AD ΔE 0.026
- Off Blue #5684AE ΔE 0.032
- Silver Lake Blue #778DA9 ΔE 0.038
- Cool Blue #4984B8 ΔE 0.038
- Blue Grey #758DA3 ΔE 0.041
- Steel Blue #4682B4 ΔE 0.044
- Blue NCS #118AB2 ΔE 0.052
Use #598FB7 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.