#5BB2E1
Closest named color: Deep Sky Blue (#00BFFF). oklch(72.8% 0.108 234.6), rgb(91, 178, 225).
Aa
Black text reads best on this color (8.90:1).
About this color
#5BB2E1 is a medium-light, moderately saturated blue. In OKLCH its lightness is 73%, its chroma 0.108 and its hue 235°. Its hue sits on the cool side of the wheel. The nearest named color is Deep Sky Blue (#00BFFF), ΔE 0.053 away. Black text reads best on it, at 8.90:1.
| Hue family | Blues |
| Lightness | medium-light (73%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Deep Sky Blue (#00BFFF) |
| Black text | 8.90:1 |
| White text | 2.35:1 |
Values
| HEX | #5BB2E1 |
| RGB | rgb(91, 178, 225) |
| HSL | hsl(201, 69%, 62%) |
| OKLCH | oklch(72.8% 0.108 234.6) |
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 #5BB2E1 | 2.35:1 | Fails | Lc -51.2 | Large or bold text, headings |
| Black text on #5BB2E1 | 8.90:1 | AAA | Lc 57.7 | Large or bold text, headings |
| #5BB2E1 text on white | 2.35:1 | Fails | Lc 46.3 | Large or bold text, headings |
| #5BB2E1 text on black | 8.90:1 | AAA | Lc -55.8 | 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
#DEECF5
oklch(93.5% 0.019 235.7)
-
Step 200
200
#C2DEEF
oklch(88.5% 0.038 234.5)
-
Step 300
300
#96C8E6
oklch(80.8% 0.067 235)
-
Step 400
400 (this color)
#5BB2E1
oklch(72.8% 0.108 234.6)
-
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
#005679
oklch(42.8% 0.09 234.7)
-
Step 900
900
#004765
oklch(37.6% 0.08 234.9)
-
Step 950
950
#002A3E
oklch(26.9% 0.057 235.2)
#5BB2E1 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) | #9CB0E3 | 0.069 |
| Deuteranopia (no green cones) | #89A3E0 | 0.058 |
| Tritanopia (no blue cones) | #00BEC2 | 0.075 |
| Achromatopsia (no color) | #A9A9A9 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB2E1
#5BB2E1
oklch(72.8% 0.108 234.6)
- #DC9463
#DC9463
oklch(72.8% 0.109 54.4)
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 #5BB2E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Deep Sky Blue #00BFFF ΔE 0.053
- Vivid Sky Blue #4CC9F0 ΔE 0.061
- Turquoise Blue #06B1C4 ΔE 0.062
- Carolina Blue #8AB8FE ΔE 0.067
- Greyblue #77A1B5 ΔE 0.069
- Lightblue #7BC8F6 ΔE 0.072
- Bright Sky Blue #02CCFE ΔE 0.073
- Bluegrey #85A3B2 ΔE 0.075
Use #5BB2E1 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.