#5BB9CC
Closest named color: Turquoise Blue (#06B1C4). oklch(73.6% 0.093 212.6), rgb(91, 185, 204).
Aa
Black text reads best on this color (9.25:1).
About this color
#5BB9CC is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 74%, its chroma 0.093 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.048 away. Black text reads best on it, at 9.25:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.093) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 9.25:1 |
| White text | 2.26:1 |
Values
| HEX | #5BB9CC |
| RGB | rgb(91, 185, 204) |
| HSL | hsl(190, 53%, 58%) |
| OKLCH | oklch(73.6% 0.093 212.6) |
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 #5BB9CC | 2.26:1 | Fails | Lc -49.4 | Large or bold text, headings |
| Black text on #5BB9CC | 9.25:1 | AAA | Lc 59.4 | Large or bold text, headings |
| #5BB9CC text on white | 2.26:1 | Fails | Lc 44.5 | Non-text elements, placeholder text |
| #5BB9CC text on black | 9.25:1 | AAA | Lc -57.6 | 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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DEEDF0
oklch(93.6% 0.016 211)
-
Step 200
200
#C2DFE6
oklch(88.5% 0.032 213.9)
-
Step 300
300
#95CBD7
oklch(80.9% 0.058 212.9)
-
Step 400
400 (this color)
#5BB9CC
oklch(73.6% 0.093 212.6)
-
Step 500
500
#009AB1
oklch(63% 0.11 213.1)
-
Step 600
600
#008295
oklch(55.7% 0.097 212.5)
-
Step 700
700
#006D7D
oklch(49.1% 0.086 212.3)
-
Step 800
800
#005967
oklch(42.6% 0.075 213)
-
Step 900
900
#004A56
oklch(37.6% 0.066 213)
-
Step 950
950
#002C34
oklch(26.9% 0.047 213.2)
#5BB9CC 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) | #AAB3CD | 0.085 |
| Deuteranopia (no green cones) | #99A7CC | 0.077 |
| Tritanopia (no blue cones) | #00C1BF | 0.049 |
| Achromatopsia (no color) | #ACACAC | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB9CC
#5BB9CC
oklch(73.6% 0.093 212.6)
- #DE9484
#DE9484
oklch(73.7% 0.093 32.7)
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 #5BB9CC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.048
- Vivid Sky Blue #4CC9F0 ΔE 0.058
- Topaz #13BBAF ΔE 0.061
- Dark Turquoise #00CED1 ΔE 0.061
- Light Sea Green #20B2AA ΔE 0.065
- Greyblue #77A1B5 ΔE 0.066
- Bluegrey #85A3B2 ΔE 0.067
- Medium Turquoise #48D1CC ΔE 0.068
Use #5BB9CC 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.