#5BB7E8
Closest named color: Deep Sky Blue (#00BFFF). oklch(74.3% 0.113 234.4), rgb(91, 183, 232).
Aa
Black text reads best on this color (9.38:1).
About this color
#5BB7E8 is a medium-light, moderately saturated blue. In OKLCH its lightness is 74%, its chroma 0.113 and its hue 234°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.043 away. Black text reads best on it, at 9.38:1.
| Hue family | Blues |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.38:1 |
| White text | 2.23:1 |
Values
| HEX | #5BB7E8 |
| RGB | rgb(91, 183, 232) |
| HSL | hsl(201, 75%, 63%) |
| OKLCH | oklch(74.3% 0.113 234.4) |
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 #5BB7E8 | 2.23:1 | Fails | Lc -48.7 | Large or bold text, headings |
| Black text on #5BB7E8 | 9.38:1 | AAA | Lc 60.1 | Content text, not long reading |
| #5BB7E8 text on white | 2.23:1 | Fails | Lc 43.9 | Non-text elements, placeholder text |
| #5BB7E8 text on black | 9.38:1 | AAA | Lc -58.3 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F7FB
oklch(97.2% 0.009 232.4)
-
Step 100
100
#DDECF6
oklch(93.5% 0.021 236.8)
-
Step 200
200
#C1DEEF
oklch(88.5% 0.039 233.6)
-
Step 300
300
#94C9E8
oklch(81% 0.07 234.5)
-
Step 400
400 (this color)
#5BB7E8
oklch(74.3% 0.113 234.4)
-
Step 500
500
#0095CD
oklch(63.1% 0.132 234.2)
-
Step 600
600
#007DAD
oklch(55.6% 0.117 234.3)
-
Step 700
700
#006992
oklch(49.1% 0.103 234.3)
-
Step 800
800
#005678
oklch(42.7% 0.089 233.9)
-
Step 900
900
#004865
oklch(37.8% 0.079 233.7)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#5BB7E8 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) | #9FB5EA | 0.071 |
| Deuteranopia (no green cones) | #8CA7E7 | 0.061 |
| Tritanopia (no blue cones) | #00C4C7 | 0.078 |
| Achromatopsia (no color) | #ADADAD | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB7E8
#5BB7E8
oklch(74.3% 0.113 234.4)
- #E39865
#E39865
oklch(74.4% 0.112 54.3)
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 #5BB7E8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.043
- Vivid Sky Blue #4CC9F0 ΔE 0.047
- Carolina Blue #8AB8FE ΔE 0.058
- Lightblue #7BC8F6 ΔE 0.059
- Bright Sky Blue #02CCFE ΔE 0.060
- Sky #82CAFC ΔE 0.069
- Turquoise Blue #06B1C4 ΔE 0.070
- Light Cornflower Blue #98C1D9 ΔE 0.074
Use #5BB7E8 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.