#5988DC
Closest named color: Dark Sky Blue (#448EE4). oklch(63.2% 0.137 261.2), rgb(89, 136, 220).
Aa
Black text reads best on this color (5.97:1).
About this color
#5988DC is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.137 and its hue 261°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.023 away. Black text reads best on it, at 5.97:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.137) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.97:1 |
| White text | 3.51:1 |
Values
| HEX | #5988DC |
| RGB | rgb(89, 136, 220) |
| HSL | hsl(218, 65%, 61%) |
| OKLCH | oklch(63.2% 0.137 261.2) |
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 #5988DC | 3.51:1 | AA large text | Lc -68.0 | Content text, not long reading |
| Black text on #5988DC | 5.97:1 | AA | Lc 41.6 | Non-text elements, placeholder text |
| #5988DC text on white | 3.51:1 | AA large text | Lc 62.5 | Content text, not long reading |
| #5988DC text on black | 5.97:1 | AA | Lc -39.2 | 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
#F2F6FC
oklch(97.2% 0.009 258.3)
-
Step 100
100
#E3EAF7
oklch(93.6% 0.019 263)
-
Step 200
200
#CCDAF2
oklch(88.5% 0.036 261.3)
-
Step 300
300
#A9C2ED
oklch(81% 0.067 261.2)
-
Step 400
400
#7BA1E4
oklch(70.8% 0.107 261.3)
-
Step 500
500 (this color)
#5988DC
oklch(63.2% 0.137 261.2)
-
Step 600
600
#3E70C9
oklch(55.6% 0.148 261)
-
Step 700
700
#315DAE
oklch(49.1% 0.138 261.4)
-
Step 800
800
#294C8D
oklch(42.6% 0.115 261.5)
-
Step 900
900
#254071
oklch(37.7% 0.09 261.4)
-
Step 950
950
#162642
oklch(27% 0.057 260.9)
#5988DC 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) | #648FDF | 0.024 |
| Deuteranopia (no green cones) | #5283DA | 0.016 |
| Tritanopia (no blue cones) | #009BA7 | 0.119 |
| Achromatopsia (no color) | #898989 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5988DC
#5988DC
oklch(63.2% 0.137 261.2)
- #B18000
#B18000
oklch(63.2% 0.13 81.5)
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 #5988DC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.023
- Soft Blue #6488EA ΔE 0.025
- Chefchaouen Blue #4895EF ΔE 0.040
- Cornflower Blue #6495ED ΔE 0.043
- Faded Blue #658CBB ΔE 0.055
- Water Blue #0E87CC ΔE 0.056
- Cool Blue #4984B8 ΔE 0.059
- Dodger Blue #1E90FF ΔE 0.061
Use #5988DC 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.