#5BB3C8
Closest named color: Turquoise Blue (#06B1C4). oklch(72% 0.09 215.4), rgb(91, 179, 200).
Aa
Black text reads best on this color (8.72:1).
About this color
#5BB3C8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.090 and its hue 215°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.040 away. Black text reads best on it, at 8.72:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.090) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #5BB3C8 |
| RGB | rgb(91, 179, 200) |
| HSL | hsl(192, 50%, 57%) |
| OKLCH | oklch(72% 0.09 215.4) |
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 #5BB3C8 | 2.40:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #5BB3C8 | 8.72:1 | AAA | Lc 56.8 | Large or bold text, headings |
| #5BB3C8 text on white | 2.40:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #5BB3C8 text on black | 8.72:1 | AAA | Lc -54.8 | 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
#F0F7F9
oklch(97.1% 0.008 216.6)
-
Step 100
100
#DEEDF1
oklch(93.6% 0.017 215.5)
-
Step 200
200
#C3DFE6
oklch(88.5% 0.031 214.5)
-
Step 300
300
#98CAD7
oklch(80.8% 0.055 215.5)
-
Step 400
400 (this color)
#5BB3C8
oklch(72% 0.09 215.4)
-
Step 500
500
#009AB4
oklch(63.2% 0.112 215.3)
-
Step 600
600
#008197
oklch(55.5% 0.098 215.2)
-
Step 700
700
#006D80
oklch(49.2% 0.087 215.3)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#012C35
oklch(27% 0.047 215.7)
#5BB3C8 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) | #A4AEC9 | 0.080 |
| Deuteranopia (no green cones) | #94A2C8 | 0.073 |
| Tritanopia (no blue cones) | #00BBB9 | 0.052 |
| Achromatopsia (no color) | #A7A7A7 | 0.090 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB3C8
#5BB3C8
oklch(72% 0.09 215.4)
- #D6917E
#D6917E
oklch(72.1% 0.089 36.1)
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 #5BB3C8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.040
- Greyblue #77A1B5 ΔE 0.052
- Bluegrey #85A3B2 ΔE 0.056
- Light Sea Green #20B2AA ΔE 0.060
- Topaz #13BBAF ΔE 0.062
- Bluey Grey #89A0B0 ΔE 0.065
- Cool Steel #97A7B3 ΔE 0.068
- Cadet Blue #5F9EA0 ΔE 0.071
Use #5BB3C8 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.