#598BDC
Closest named color: Dark Sky Blue (#448EE4). oklch(63.8% 0.134 259.6), rgb(89, 139, 220).
Aa
Black text reads best on this color (6.15:1).
About this color
#598BDC is a medium-light, moderately saturated blue. In OKLCH its lightness is 64%, its chroma 0.134 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.021 away. Black text reads best on it, at 6.15:1.
| Hue family | Blues |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.134) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 6.15:1 |
| White text | 3.41:1 |
Values
| HEX | #598BDC |
| RGB | rgb(89, 139, 220) |
| HSL | hsl(217, 65%, 61%) |
| OKLCH | oklch(63.8% 0.134 259.6) |
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 #598BDC | 3.41:1 | AA large text | Lc -66.9 | Content text, not long reading |
| Black text on #598BDC | 6.15:1 | AA | Lc 42.6 | Non-text elements, placeholder text |
| #598BDC text on white | 3.41:1 | AA large text | Lc 61.4 | Content text, not long reading |
| #598BDC text on black | 6.15:1 | AA | Lc -40.3 | 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
#F2F6FB
oklch(97.2% 0.008 253.9)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CBDAF2
oklch(88.5% 0.037 259.8)
-
Step 300
300
#A8C2EC
oklch(80.9% 0.066 259.9)
-
Step 400
400
#79A1E2
oklch(70.6% 0.106 259.8)
-
Step 500
500 (this color)
#598BDC
oklch(63.8% 0.134 259.6)
-
Step 600
600
#3C71C7
oklch(55.6% 0.145 259.6)
-
Step 700
700
#2E5EAC
oklch(49.1% 0.135 259.7)
-
Step 800
800
#274D8B
oklch(42.6% 0.112 259.7)
-
Step 900
900
#24416F
oklch(37.7% 0.087 259.3)
-
Step 950
950
#162641
oklch(27% 0.055 260.3)
#598BDC 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) | #6992DF | 0.028 |
| Deuteranopia (no green cones) | #5785DA | 0.016 |
| Tritanopia (no blue cones) | #009DA9 | 0.115 |
| Achromatopsia (no color) | #8B8B8B | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #598BDC
#598BDC
oklch(63.8% 0.134 259.6)
- #B68100
#B68100
oklch(64% 0.133 79.6)
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 #598BDC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.021
- Soft Blue #6488EA ΔE 0.027
- Chefchaouen Blue #4895EF ΔE 0.035
- Cornflower Blue #6495ED ΔE 0.037
- Faded Blue #658CBB ΔE 0.052
- Water Blue #0E87CC ΔE 0.057
- Cool Blue #4984B8 ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.061
Use #598BDC 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.