#219EB0
Closest named color: Sea (#3C9992). oklch(64.3% 0.104 209.9), rgb(33, 158, 176).
Aa
Black text reads best on this color (6.58:1).
About this color
#219EB0 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.104 and its hue 210°. Its hue sits on the cool side of the wheel. The nearest named color is Sea (#3C9992), ΔE 0.043 away. Black text reads best on it, at 6.58:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (64%) |
| Chroma | moderately saturated (0.104) |
| Temperature | cool |
| Nearest name | Sea (#3C9992) |
| Black text | 6.58:1 |
| White text | 3.19:1 |
Values
| HEX | #219EB0 |
| RGB | rgb(33, 158, 176) |
| HSL | hsl(188, 68%, 41%) |
| OKLCH | oklch(64.3% 0.104 209.9) |
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 #219EB0 | 3.19:1 | AA large text | Lc -64.1 | Content text, not long reading |
| Black text on #219EB0 | 6.58:1 | AA | Lc 45.4 | Large or bold text, headings |
| #219EB0 text on white | 3.19:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #219EB0 text on black | 6.58:1 | AA | Lc -43.1 | 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
#DFEDEF
oklch(93.6% 0.015 207.1)
-
Step 200
200
#C5DFE3
oklch(88.6% 0.028 207.8)
-
Step 300
300
#9BCAD3
oklch(80.9% 0.051 210.6)
-
Step 400
400
#5EAFBD
oklch(70.8% 0.082 210)
-
Step 500
500 (this color)
#219EB0
oklch(64.3% 0.104 209.9)
-
Step 600
600
#008292
oklch(55.6% 0.096 209.8)
-
Step 700
700
#006D7B
oklch(49% 0.085 210.2)
-
Step 800
800
#005A65
oklch(42.8% 0.074 209.1)
-
Step 900
900
#004B55
oklch(37.8% 0.065 210)
-
Step 950
950
#052C32
oklch(27% 0.043 210.1)
#219EB0 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) | #8F98B1 | 0.099 |
| Deuteranopia (no green cones) | #7C8AB0 | 0.090 |
| Tritanopia (no blue cones) | #00A6A3 | 0.036 |
| Achromatopsia (no color) | #909090 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #219EB0
#219EB0
oklch(64.3% 0.104 209.9)
- #C57467
#C57467
oklch(64.4% 0.105 29.9)
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 #219EB0, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sea #3C9992 ΔE 0.043
- Cadet Blue #5F9EA0 ΔE 0.045
- Teal Green #0A9396 ΔE 0.047
- Persian Green #2A9D8F ΔE 0.050
- Blue Green #0F9B8E ΔE 0.052
- Turquoise Blue #06B1C4 ΔE 0.055
- Dull Teal #5F9E8F ΔE 0.060
- Blue NCS #118AB2 ΔE 0.062
Use #219EB0 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.