#5BB3BF
Closest named color: Turquoise Blue (#06B1C4). oklch(71.7% 0.086 207.1), rgb(91, 179, 191).
Aa
Black text reads best on this color (8.64:1).
About this color
#5BB3BF is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 72%, its chroma 0.086 and its hue 207°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.039 away. Black text reads best on it, at 8.64:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.086) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.64:1 |
| White text | 2.42:1 |
Values
| HEX | #5BB3BF |
| RGB | rgb(91, 179, 191) |
| HSL | hsl(187, 44%, 55%) |
| OKLCH | oklch(71.7% 0.086 207.1) |
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 #5BB3BF | 2.42:1 | Fails | Lc -52.6 | Large or bold text, headings |
| Black text on #5BB3BF | 8.64:1 | AAA | Lc 56.4 | Large or bold text, headings |
| #5BB3BF text on white | 2.42:1 | Fails | Lc 47.6 | Large or bold text, headings |
| #5BB3BF text on black | 8.64:1 | AAA | Lc -54.4 | 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
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C3DFE3
oklch(88.4% 0.03 207.1)
-
Step 300
300
#98CBD2
oklch(80.9% 0.054 206.7)
-
Step 400
400 (this color)
#5BB3BF
oklch(71.7% 0.086 207.1)
-
Step 500
500
#009BAB
oklch(63% 0.108 207.7)
-
Step 600
600
#008390
oklch(55.7% 0.096 207)
-
Step 700
700
#006E79
oklch(49.2% 0.084 206.9)
-
Step 800
800
#005A63
oklch(42.7% 0.073 206.6)
-
Step 900
900
#004B53
oklch(37.7% 0.065 207)
-
Step 950
950
#012C32
oklch(26.9% 0.046 209.1)
#5BB3BF 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) | #A6ADC0 | 0.083 |
| Deuteranopia (no green cones) | #97A1BF | 0.078 |
| Tritanopia (no blue cones) | #0CBAB6 | 0.044 |
| Achromatopsia (no color) | #A6A6A6 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB3BF
#5BB3BF
oklch(71.7% 0.086 207.1)
- #D48F86
#D48F86
oklch(71.7% 0.086 27.6)
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 #5BB3BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.039
- Light Sea Green #20B2AA ΔE 0.049
- Greyblue #77A1B5 ΔE 0.052
- Topaz #13BBAF ΔE 0.052
- Bluegrey #85A3B2 ΔE 0.055
- Bluey Grey #89A0B0 ΔE 0.064
- Cadet Blue #5F9EA0 ΔE 0.064
- Cool Steel #97A7B3 ΔE 0.067
Use #5BB3BF 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.