#2198B2
Closest named color: Blue NCS (#118AB2). oklch(62.9% 0.105 216.9), rgb(33, 152, 178).
Aa
Black text reads best on this color (6.19:1).
About this color
#2198B2 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.105 and its hue 217°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.043 away. Black text reads best on it, at 6.19:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.105) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.19:1 |
| White text | 3.38:1 |
Values
| HEX | #2198B2 |
| RGB | rgb(33, 152, 178) |
| HSL | hsl(191, 69%, 41%) |
| OKLCH | oklch(62.9% 0.105 216.9) |
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 #2198B2 | 3.38:1 | AA large text | Lc -66.4 | Content text, not long reading |
| Black text on #2198B2 | 6.19:1 | AA | Lc 43.1 | Non-text elements, placeholder text |
| #2198B2 text on white | 3.38:1 | AA large text | Lc 60.9 | Content text, not long reading |
| #2198B2 text on black | 6.19:1 | AA | Lc -40.8 | 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
#DFEDF0
oklch(93.7% 0.015 212)
-
Step 200
200
#C5DEE5
oklch(88.4% 0.028 216.4)
-
Step 300
300
#9CC9D6
oklch(80.8% 0.051 217.4)
-
Step 400
400
#60ADC2
oklch(70.6% 0.082 217.6)
-
Step 500
500 (this color)
#2198B2
oklch(62.9% 0.105 216.9)
-
Step 600
600
#008199
oklch(55.6% 0.099 216.9)
-
Step 700
700
#006C81
oklch(49% 0.088 217.4)
-
Step 800
800
#00596A
oklch(42.8% 0.076 216.6)
-
Step 900
900
#004A59
oklch(37.7% 0.067 217.2)
-
Step 950
950
#062B34
oklch(26.8% 0.043 217.9)
#2198B2 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) | #8793B3 | 0.091 |
| Deuteranopia (no green cones) | #7486B2 | 0.081 |
| Tritanopia (no blue cones) | #00A1A0 | 0.045 |
| Achromatopsia (no color) | #8B8B8B | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2198B2
#2198B2
oklch(62.9% 0.105 216.9)
- #BF715B
#BF715B
oklch(62.9% 0.105 36.6)
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 #2198B2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.043
- Teal Green #0A9396 ΔE 0.044
- Sea #3C9992 ΔE 0.051
- Teal Blue #01889F ΔE 0.052
- Cadet Blue #5F9EA0 ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.059
- Persian Green #2A9D8F ΔE 0.060
- Blue Green #0F9B8E ΔE 0.060
Use #2198B2 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.