#2198B8
Closest named color: Blue NCS (#118AB2). oklch(63.2% 0.108 221.3), rgb(33, 152, 184).
Aa
Black text reads best on this color (6.24:1).
About this color
#2198B8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 63%, its chroma 0.108 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.042 away. Black text reads best on it, at 6.24:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (63%) |
| Chroma | moderately saturated (0.108) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.24:1 |
| White text | 3.36:1 |
Values
| HEX | #2198B8 |
| RGB | rgb(33, 152, 184) |
| HSL | hsl(193, 70%, 43%) |
| OKLCH | oklch(63.2% 0.108 221.3) |
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 #2198B8 | 3.36:1 | AA large text | Lc -66.1 | Content text, not long reading |
| Black text on #2198B8 | 6.24:1 | AA | Lc 43.4 | Non-text elements, placeholder text |
| #2198B8 text on white | 3.36:1 | AA large text | Lc 60.6 | Content text, not long reading |
| #2198B8 text on black | 6.24:1 | AA | Lc -41.1 | 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
#F1F7F9
oklch(97.2% 0.007 219.6)
-
Step 100
100
#DFECF1
oklch(93.5% 0.015 222.7)
-
Step 200
200
#C5DEE7
oklch(88.5% 0.029 221.4)
-
Step 300
300
#9BC9D9
oklch(80.9% 0.053 221.2)
-
Step 400
400
#5FADC6
oklch(70.7% 0.085 221)
-
Step 500
500 (this color)
#2198B8
oklch(63.2% 0.108 221.3)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C85
oklch(49.2% 0.09 221.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#00495B
oklch(37.6% 0.069 221.4)
-
Step 950
950
#062B36
oklch(27% 0.045 222.2)
#2198B8 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) | #8594BA | 0.088 |
| Deuteranopia (no green cones) | #7186B8 | 0.078 |
| Tritanopia (no blue cones) | #00A2A2 | 0.052 |
| Achromatopsia (no color) | #8C8C8C | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2198B8
#2198B8
oklch(63.2% 0.108 221.3)
- #C17254
#C17254
oklch(63.2% 0.109 41.4)
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 #2198B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.042
- Teal Green #0A9396 ΔE 0.053
- Teal Blue #01889F ΔE 0.056
- Dusty Blue #5A86AD ΔE 0.058
- Faded Blue #658CBB ΔE 0.059
- Cool Blue #4984B8 ΔE 0.059
- Sea #3C9992 ΔE 0.060
- Off Blue #5684AE ΔE 0.061
Use #2198B8 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.