#00B1E1
Closest named color: Turquoise Blue (#06B1C4). oklch(70.8% 0.135 226), rgb(0, 177, 225).
Aa
Black text reads best on this color (8.37:1).
About this color
#00B1E1 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 71%, its chroma 0.135 and its hue 226°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise Blue (#06B1C4), ΔE 0.044 away. Black text reads best on it, at 8.37:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (71%) |
| Chroma | moderately saturated (0.135) |
| Temperature | cool |
| Nearest name | Turquoise Blue (#06B1C4) |
| Black text | 8.37:1 |
| White text | 2.50:1 |
Values
| HEX | #00B1E1 |
| RGB | rgb(0, 177, 225) |
| HSL | hsl(193, 100%, 44%) |
| OKLCH | oklch(70.8% 0.135 226) |
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 #00B1E1 | 2.50:1 | Fails | Lc -53.6 | Large or bold text, headings |
| Black text on #00B1E1 | 8.37:1 | AAA | Lc 55.5 | Large or bold text, headings |
| #00B1E1 text on white | 2.50:1 | Fails | Lc 48.5 | Large or bold text, headings |
| #00B1E1 text on black | 8.37:1 | AAA | Lc -53.5 | 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
#EEF7FB
oklch(97.1% 0.011 226)
-
Step 100
100
#DAEEF7
oklch(93.7% 0.024 226.5)
-
Step 200
200
#B9E0F1
oklch(88.4% 0.047 226.2)
-
Step 300
300
#83CCEB
oklch(80.8% 0.085 226.8)
-
Step 400
400 (this color)
#00B1E1
oklch(70.8% 0.135 226)
-
Step 500
500
#0097C1
oklch(63% 0.121 226.4)
-
Step 600
600
#007FA3
oklch(55.6% 0.107 226.4)
-
Step 700
700
#006B89
oklch(49.1% 0.094 225.7)
-
Step 800
800
#005771
oklch(42.6% 0.082 226.6)
-
Step 900
900
#00495F
oklch(37.8% 0.072 226.2)
-
Step 950
950
#002B3A
oklch(27% 0.052 227.2)
#00B1E1 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) | #97ADE3 | 0.101 |
| Deuteranopia (no green cones) | #7D9CE0 | 0.086 |
| Tritanopia (no blue cones) | #00BFC1 | 0.071 |
| Achromatopsia (no color) | #A4A4A4 | 0.136 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #00B1E1
#00B1E1
oklch(70.8% 0.135 226)
- #E58454
#E58454
oklch(70.9% 0.135 46.1)
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 #00B1E1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise Blue #06B1C4 ΔE 0.044
- Deep Sky Blue #00BFFF ΔE 0.052
- Vivid Sky Blue #4CC9F0 ΔE 0.076
- Bright Sky Blue #02CCFE ΔE 0.078
- Light Sea Green #20B2AA ΔE 0.084
- Greyblue #77A1B5 ΔE 0.084
- Chefchaouen Blue #4895EF ΔE 0.085
- Topaz #13BBAF ΔE 0.088
Use #00B1E1 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.