#2183A2
Closest named color: Teal Blue (#01889F). oklch(57% 0.098 224.4), rgb(33, 131, 162).
Aa
Black text reads best on this color (4.83:1).
About this color
#2183A2 is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.098 and its hue 224°. Its hue sits on the cool side of the wheel. The nearest named color is Teal Blue (#01889F), ΔE 0.018 away. Black text reads best on it, at 4.83:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.098) |
| Temperature | cool |
| Nearest name | Teal Blue (#01889F) |
| Black text | 4.83:1 |
| White text | 4.34:1 |
Values
| HEX | #2183A2 |
| RGB | rgb(33, 131, 162) |
| HSL | hsl(194, 66%, 38%) |
| OKLCH | oklch(57% 0.098 224.4) |
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 #2183A2 | 4.34:1 | AA large text | Lc -75.2 | Fine for body text |
| Black text on #2183A2 | 4.83:1 | AA | Lc 34.4 | Non-text elements, placeholder text |
| #2183A2 text on white | 4.34:1 | AA large text | Lc 69.7 | Content text, not long reading |
| #2183A2 text on black | 4.83:1 | AA | Lc -31.9 | 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 600.
-
Step 50
50
#F1F6F8
oklch(97% 0.006 223.5)
-
Step 100
100
#E1ECF0
oklch(93.6% 0.013 221.4)
-
Step 200
200
#C9DDE5
oklch(88.5% 0.024 223.7)
-
Step 300
300
#A3C7D6
oklch(80.8% 0.044 225.1)
-
Step 400
400
#6FAAC1
oklch(70.6% 0.07 224.6)
-
Step 500
500
#4395B2
oklch(63.1% 0.09 224.3)
-
Step 600
600 (this color)
#2183A2
oklch(57% 0.098 224.4)
-
Step 700
700
#076B87
oklch(49.1% 0.091 224.5)
-
Step 800
800
#0F576E
oklch(42.7% 0.076 225.3)
-
Step 900
900
#174859
oklch(37.7% 0.059 224.8)
-
Step 950
950
#0F2A34
oklch(26.9% 0.038 225.1)
#2183A2 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) | #7280A4 | 0.076 |
| Deuteranopia (no green cones) | #6174A2 | 0.066 |
| Tritanopia (no blue cones) | #008C8D | 0.050 |
| Achromatopsia (no color) | #797979 | 0.098 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2183A2
#2183A2
oklch(57% 0.098 224.4)
- #A76345
#A76345
oklch(56.9% 0.098 44.2)
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 #2183A2, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Teal Blue #01889F ΔE 0.018
- Blue NCS #118AB2 ΔE 0.028
- Cerulean #457B9D ΔE 0.030
- Ocean #017B92 ΔE 0.035
- Stormy Blue #507B9C ΔE 0.038
- Nice Blue #107AB0 ΔE 0.040
- Steel Blue #4682B4 ΔE 0.041
- Dull Blue #49759C ΔE 0.045
Use #2183A2 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.