#5BB8EC
Closest named color: Deep Sky Blue (#00BFFF). oklch(74.7% 0.116 235.7), rgb(91, 184, 236).
Aa
Black text reads best on this color (9.51:1).
About this color
#5BB8EC is a medium-light, moderately saturated blue. In OKLCH its lightness is 75%, its chroma 0.116 and its hue 236°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.040 away. Black text reads best on it, at 9.51:1.
| Hue family | Blues |
| Lightness | medium-light (75%) |
| Chroma | moderately saturated (0.116) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 9.51:1 |
| White text | 2.20:1 |
Values
| HEX | #5BB8EC |
| RGB | rgb(91, 184, 236) |
| HSL | hsl(202, 79%, 64%) |
| OKLCH | oklch(74.7% 0.116 235.7) |
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 #5BB8EC | 2.20:1 | Fails | Lc -48.0 | Large or bold text, headings |
| Black text on #5BB8EC | 9.51:1 | AAA | Lc 60.7 | Content text, not long reading |
| #5BB8EC text on white | 2.20:1 | Fails | Lc 43.2 | Non-text elements, placeholder text |
| #5BB8EC text on black | 9.51:1 | AAA | Lc -58.9 | 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
#C1DEF1
oklch(88.5% 0.04 236.7)
-
Step 300
300
#93C9E9
oklch(81% 0.072 234.8)
-
Step 400
400 (this color)
#5BB8EC
oklch(74.7% 0.116 235.7)
-
Step 500
500
#0094CF
oklch(63% 0.135 235.8)
-
Step 600
600
#007DAF
oklch(55.7% 0.119 235.4)
-
Step 700
700
#006994
oklch(49.2% 0.105 235.5)
-
Step 800
800
#00567A
oklch(42.8% 0.091 235.4)
-
Step 900
900
#004766
oklch(37.6% 0.081 235.8)
-
Step 950
950
#002A3F
oklch(27% 0.059 236.5)
#5BB8EC 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) | #9FB7EE | 0.070 |
| Deuteranopia (no green cones) | #8BA8EB | 0.059 |
| Tritanopia (no blue cones) | #00C6C9 | 0.082 |
| Achromatopsia (no color) | #AEAEAE | 0.116 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB8EC
#5BB8EC
oklch(74.7% 0.116 235.7)
- #E59962
#E59962
oklch(74.7% 0.116 55.8)
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 #5BB8EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.040
- Vivid Sky Blue #4CC9F0 ΔE 0.045
- Carolina Blue #8AB8FE ΔE 0.055
- Lightblue #7BC8F6 ΔE 0.056
- Bright Sky Blue #02CCFE ΔE 0.056
- Sky #82CAFC ΔE 0.066
- Light Cornflower Blue #98C1D9 ΔE 0.074
- Turquoise Blue #06B1C4 ΔE 0.075
Use #5BB8EC 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.