#5BB1B4
Closest named color: Light Sea Green (#20B2AA). oklch(70.8% 0.083 198.4), rgb(91, 177, 180).
Aa
Black text reads best on this color (8.39:1).
About this color
#5BB1B4 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.083 and its hue 198°. Its hue sits on the cool side of the wheel. The nearest named color is Light Sea Green (#20B2AA), ΔE 0.039 away. Black text reads best on it, at 8.39:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.083) |
| Temperature | cool |
| Nearest name | Light Sea Green (#20B2AA) |
| Black text | 8.39:1 |
| White text | 2.50:1 |
Values
| HEX | #5BB1B4 |
| RGB | rgb(91, 177, 180) |
| HSL | hsl(182, 37%, 53%) |
| OKLCH | oklch(70.8% 0.083 198.4) |
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 #5BB1B4 | 2.50:1 | Fails | Lc -54.0 | Large or bold text, headings |
| Black text on #5BB1B4 | 8.39:1 | AAA | Lc 55.1 | Large or bold text, headings |
| #5BB1B4 text on white | 2.50:1 | Fails | Lc 48.9 | Large or bold text, headings |
| #5BB1B4 text on black | 8.39:1 | AAA | Lc -53.0 | 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
#F0F7F7
oklch(97.1% 0.007 197)
-
Step 100
100
#DFEDED
oklch(93.6% 0.015 196.9)
-
Step 200
200
#C4DFE0
oklch(88.4% 0.029 199.4)
-
Step 300
300
#99CBCD
oklch(80.8% 0.052 199.3)
-
Step 400
400 (this color)
#5BB1B4
oklch(70.8% 0.083 198.4)
-
Step 500
500
#079DA1
oklch(63.2% 0.107 198)
-
Step 600
600
#008488
oklch(55.7% 0.095 198.5)
-
Step 700
700
#006F72
oklch(49.2% 0.084 198.1)
-
Step 800
800
#005B5E
oklch(42.8% 0.073 198.7)
-
Step 900
900
#004C4E
oklch(37.8% 0.064 197.8)
-
Step 950
950
#032D2E
oklch(27.1% 0.044 197.3)
#5BB1B4 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) | #A7AAB4 | 0.086 |
| Deuteranopia (no green cones) | #989FB5 | 0.080 |
| Tritanopia (no blue cones) | #22B6B2 | 0.034 |
| Achromatopsia (no color) | #A4A4A4 | 0.084 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5BB1B4
#5BB1B4
oklch(70.8% 0.083 198.4)
- #D08C8D
#D08C8D
oklch(70.9% 0.083 18.4)
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 #5BB1B4, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Sea Green #20B2AA ΔE 0.039
- Turquoise Blue #06B1C4 ΔE 0.042
- Topaz #13BBAF ΔE 0.045
- Greyblue #77A1B5 ΔE 0.051
- Cadet Blue #5F9EA0 ΔE 0.054
- Greeny Blue #42B395 ΔE 0.054
- Bluegrey #85A3B2 ΔE 0.054
- Bluey Grey #89A0B0 ΔE 0.062
Use #5BB1B4 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.