#289AB2
Closest named color: Teal Green (#0A9396). oklch(63.6% 0.103 215.6), rgb(40, 154, 178).
Aa
Black text reads best on this color (6.35:1).
About this color
#289AB2 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.103 and its hue 216°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Green (#0A9396), ΔE 0.046 away. Black text reads best on it, at 6.35:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.103) |
| Temperature | cool |
| Nearest name | Teal Green (#0A9396) |
| Black text | 6.35:1 |
| White text | 3.30:1 |
Values
| HEX | #289AB2 |
| RGB | rgb(40, 154, 178) |
| HSL | hsl(190, 63%, 43%) |
| OKLCH | oklch(63.6% 0.103 215.6) |
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 #289AB2 | 3.30:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #289AB2 | 6.35:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #289AB2 text on white | 3.30:1 | AA large text | Lc 60.0 | Content text, not long reading |
| #289AB2 text on black | 6.35:1 | AA | Lc -41.7 | 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
#F1F7F8
oklch(97.2% 0.007 208.8)
-
Step 100
100
#E0EDF0
oklch(93.7% 0.014 213.1)
-
Step 200
200
#C5DEE5
oklch(88.4% 0.028 216.4)
-
Step 300
300
#9CC9D5
oklch(80.8% 0.05 215.9)
-
Step 400
400
#61ADC0
oklch(70.6% 0.08 215.8)
-
Step 500
500 (this color)
#289AB2
oklch(63.6% 0.103 215.6)
-
Step 600
600
#008198
oklch(55.6% 0.099 216.1)
-
Step 700
700
#006D80
oklch(49.2% 0.087 215.3)
-
Step 800
800
#005969
oklch(42.7% 0.076 215.4)
-
Step 900
900
#004A58
oklch(37.7% 0.067 215.8)
-
Step 950
950
#072B33
oklch(26.8% 0.042 215.9)
#289AB2 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) | #8A95B3 | 0.091 |
| Deuteranopia (no green cones) | #7788B2 | 0.081 |
| Tritanopia (no blue cones) | #00A3A1 | 0.044 |
| Achromatopsia (no color) | #8D8D8D | 0.103 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #289AB2
#289AB2
oklch(63.6% 0.103 215.6)
- #C0735F
#C0735F
oklch(63.5% 0.102 35.4)
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 #289AB2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Green #0A9396 ΔE 0.046
- Sea #3C9992 ΔE 0.048
- Blue NCS #118AB2 ΔE 0.050
- Cadet Blue #5F9EA0 ΔE 0.050
- Persian Green #2A9D8F ΔE 0.057
- Teal Blue #01889F ΔE 0.059
- Blue Green #0F9B8E ΔE 0.059
- Dusty Blue #5A86AD ΔE 0.062
Use #289AB2 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.