#189EB6
Closest named color: Cadet Blue (#5F9EA0). oklch(64.5% 0.109 214.1), rgb(24, 158, 182).
Aa
Black text reads best on this color (6.60:1).
About this color
#189EB6 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.109 and its hue 214°. Its hue sits on the cool side of the wheel. The nearest named color is Cadet Blue (#5F9EA0), ΔE 0.052 away. Black text reads best on it, at 6.60:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Cadet Blue (#5F9EA0) |
| Black text | 6.60:1 |
| White text | 3.17:1 |
Values
| HEX | #189EB6 |
| RGB | rgb(24, 158, 182) |
| HSL | hsl(189, 77%, 40%) |
| OKLCH | oklch(64.5% 0.109 214.1) |
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 #189EB6 | 3.17:1 | AA large text | Lc -63.9 | Content text, not long reading |
| Black text on #189EB6 | 6.60:1 | AA | Lc 45.6 | Large or bold text, headings |
| #189EB6 text on white | 3.17:1 | AA large text | Lc 58.5 | Large or bold text, headings |
| #189EB6 text on black | 6.60:1 | AA | Lc -43.3 | Non-text elements, placeholder text |
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
#F0F7F8
oklch(97.1% 0.008 207.1)
-
Step 100
100
#DFEDF0
oklch(93.7% 0.015 212)
-
Step 200
200
#C4DFE5
oklch(88.6% 0.03 212.6)
-
Step 300
300
#99CAD6
oklch(80.9% 0.054 214.4)
-
Step 400
400
#5BAEC1
oklch(70.6% 0.085 214.5)
-
Step 500
500 (this color)
#189EB6
oklch(64.5% 0.109 214.1)
-
Step 600
600
#008196
oklch(55.5% 0.098 214.4)
-
Step 700
700
#006D7F
oklch(49.2% 0.087 214.3)
-
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
#032C34
oklch(27% 0.045 214.2)
#189EB6 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) | #8D99B7 | 0.098 |
| Deuteranopia (no green cones) | #798AB6 | 0.089 |
| Tritanopia (no blue cones) | #00A7A5 | 0.043 |
| Achromatopsia (no color) | #909090 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #189EB6
#189EB6
oklch(64.5% 0.109 214.1)
- #C77460
#C77460
oklch(64.5% 0.109 34.4)
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 #189EB6, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cadet Blue #5F9EA0 ΔE 0.052
- Sea #3C9992 ΔE 0.052
- Teal Green #0A9396 ΔE 0.053
- Turquoise Blue #06B1C4 ΔE 0.054
- Persian Green #2A9D8F ΔE 0.059
- Blue NCS #118AB2 ΔE 0.059
- Blue Green #0F9B8E ΔE 0.061
- Light Sea Green #20B2AA ΔE 0.068
Use #189EB6 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.