#2B99B8
Closest named color: Blue NCS (#118AB2). oklch(63.6% 0.105 221.4), rgb(43, 153, 184).
Aa
Black text reads best on this color (6.35:1).
About this color
#2B99B8 is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 64%, its chroma 0.105 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), 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 (0.105) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 6.35:1 |
| White text | 3.30:1 |
Values
| HEX | #2B99B8 |
| RGB | rgb(43, 153, 184) |
| HSL | hsl(193, 62%, 45%) |
| OKLCH | oklch(63.6% 0.105 221.4) |
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 #2B99B8 | 3.30:1 | AA large text | Lc -65.5 | Content text, not long reading |
| Black text on #2B99B8 | 6.35:1 | AA | Lc 44.0 | Non-text elements, placeholder text |
| #2B99B8 text on white | 3.30:1 | AA large text | Lc 60.1 | Content text, not long reading |
| #2B99B8 text on black | 6.35:1 | AA | Lc -41.6 | 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
#E0ECF1
oklch(93.6% 0.015 224.5)
-
Step 200
200
#C6DEE7
oklch(88.6% 0.028 222.3)
-
Step 300
300
#9DC9D8
oklch(81% 0.051 220.7)
-
Step 400
400
#62ADC5
oklch(70.8% 0.082 220.8)
-
Step 500
500 (this color)
#2B99B8
oklch(63.6% 0.105 221.4)
-
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
#02495B
oklch(37.6% 0.068 221.7)
-
Step 950
950
#082B35
oklch(27% 0.043 220.9)
#2B99B8 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) | #8795BA | 0.086 |
| Deuteranopia (no green cones) | #7487B8 | 0.077 |
| Tritanopia (no blue cones) | #00A3A3 | 0.051 |
| Achromatopsia (no color) | #8D8D8D | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2B99B8
#2B99B8
oklch(63.6% 0.105 221.4)
- #C17457
#C17457
oklch(63.6% 0.106 41.3)
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 #2B99B8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.046
- Teal Green #0A9396 ΔE 0.055
- Cadet Blue #5F9EA0 ΔE 0.056
- Faded Blue #658CBB ΔE 0.057
- Dusty Blue #5A86AD ΔE 0.058
- Sea #3C9992 ΔE 0.058
- Teal Blue #01889F ΔE 0.060
- Cool Blue #4984B8 ΔE 0.061
Use #2B99B8 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.