#5988D5
Closest named color: Dark Sky Blue (#448EE4). oklch(62.8% 0.128 259.8), rgb(89, 136, 213).
Aa
Black text reads best on this color (5.90:1).
About this color
#5988D5 is a medium-light, moderately saturated blue. In OKLCH its lightness is 63%, its chroma 0.128 and its hue 260°. Its hue sits on the cool side of the wheel. The nearest named color is Dark Sky Blue (#448EE4), ΔE 0.028 away. Black text reads best on it, at 5.90:1.
| Hue family | Blues |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.128) |
| Temperature | cool |
| Nearest name | Dark Sky Blue (#448EE4) |
| Black text | 5.90:1 |
| White text | 3.55:1 |
Values
| HEX | #5988D5 |
| RGB | rgb(89, 136, 213) |
| HSL | hsl(217, 60%, 59%) |
| OKLCH | oklch(62.8% 0.128 259.8) |
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 #5988D5 | 3.55:1 | AA large text | Lc -68.4 | Content text, not long reading |
| Black text on #5988D5 | 5.90:1 | AA | Lc 41.1 | Non-text elements, placeholder text |
| #5988D5 text on white | 3.55:1 | AA large text | Lc 63.0 | Content text, not long reading |
| #5988D5 text on black | 5.90:1 | AA | Lc -38.7 | 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
#E3EAF6
oklch(93.5% 0.018 261.3)
-
Step 200
200
#CCDAF1
oklch(88.5% 0.035 260.4)
-
Step 300
300
#A9C2EA
oklch(80.9% 0.063 259.7)
-
Step 400
400
#7CA1DF
oklch(70.6% 0.1 260.4)
-
Step 500
500 (this color)
#5988D5
oklch(62.8% 0.128 259.8)
-
Step 600
600
#3F71C3
oklch(55.5% 0.139 259.8)
-
Step 700
700
#315FA9
oklch(49.2% 0.129 259.5)
-
Step 800
800
#2A4E89
oklch(42.9% 0.107 259.8)
-
Step 900
900
#26416D
oklch(37.7% 0.083 259.7)
-
Step 950
950
#172640
oklch(27% 0.053 260.8)
#5988D5 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) | #688ED8 | 0.025 |
| Deuteranopia (no green cones) | #5883D3 | 0.014 |
| Tritanopia (no blue cones) | #0099A4 | 0.112 |
| Achromatopsia (no color) | #888888 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5988D5
#5988D5
oklch(62.8% 0.128 259.8)
- #B17E0B
#B17E0B
oklch(62.8% 0.128 79.5)
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 #5988D5, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Sky Blue #448EE4 ΔE 0.028
- Soft Blue #6488EA ΔE 0.035
- Faded Blue #658CBB ΔE 0.046
- Chefchaouen Blue #4895EF ΔE 0.047
- Cool Blue #4984B8 ΔE 0.049
- Cornflower Blue #6495ED ΔE 0.049
- Water Blue #0E87CC ΔE 0.051
- Steel Blue #4682B4 ΔE 0.056
Use #5988D5 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.