#33A5BB
Closest named color: Turquoise Blue (#06B1C4). oklch(66.9% 0.103 213.5), rgb(51, 165, 187).
Aa
Black text reads best on this color (7.24:1).
About this color
#33A5BB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 67%, its chroma 0.103 and its hue 213°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.033 away. Black text reads best on it, at 7.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 7.24:1 |
| White text | 2.90:1 |
Values
| HEX | #33A5BB |
| RGB | rgb(51, 165, 187) |
| HSL | hsl(190, 57%, 47%) |
| OKLCH | oklch(66.9% 0.103 213.5) |
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 #33A5BB | 2.90:1 | Fails | Lc -60.3 | Content text, not long reading |
| Black text on #33A5BB | 7.24:1 | AAA | Lc 49.1 | Large or bold text, headings |
| #33A5BB text on white | 2.90:1 | Fails | Lc 55.0 | Large or bold text, headings |
| #33A5BB text on black | 7.24:1 | AAA | Lc -46.8 | 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 500.
-
Step 50
50
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#DFEDF0
oklch(93.7% 0.015 212)
-
Step 200
200
#C5DEE4
oklch(88.4% 0.028 213.8)
-
Step 300
300
#9CCAD4
oklch(81% 0.05 212.5)
-
Step 400
400
#60AEBF
oklch(70.7% 0.081 213.5)
-
Step 500
500 (this color)
#33A5BB
oklch(66.9% 0.103 213.5)
-
Step 600
600
#008296
oklch(55.7% 0.098 213.4)
-
Step 700
700
#006D7E
oklch(49.1% 0.086 213.3)
-
Step 800
800
#005968
oklch(42.7% 0.075 214.2)
-
Step 900
900
#004A57
oklch(37.6% 0.066 214.5)
-
Step 950
950
#062C33
oklch(27.1% 0.043 212.8)
#33A5BB 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) | #959FBC | 0.094 |
| Deuteranopia (no green cones) | #8292BB | 0.084 |
| Tritanopia (no blue cones) | #00AEAC | 0.042 |
| Achromatopsia (no color) | #989898 | 0.104 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #33A5BB
#33A5BB
oklch(66.9% 0.103 213.5)
- #CC7D6B
#CC7D6B
oklch(66.9% 0.103 33.6)
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 #33A5BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.033
- Cadet Blue #5F9EA0 ΔE 0.045
- Light Sea Green #20B2AA ΔE 0.052
- Greyblue #77A1B5 ΔE 0.056
- Sea #3C9992 ΔE 0.062
- Dull Teal #5F9E8F ΔE 0.065
- Persian Green #2A9D8F ΔE 0.066
- Grey Teal #5E9B8A ΔE 0.071
Use #33A5BB 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.