#1784AB
Closest named color: Blue NCS (#118AB2). oklch(57.5% 0.107 228.9), rgb(23, 132, 171).
Aa
Black text reads best on this color (4.92:1).
About this color
#1784AB is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 57%, its chroma 0.107 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.018 away. Black text reads best on it, at 4.92:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (57%) |
| Chroma | moderately saturated (0.107) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #1784AB |
| RGB | rgb(23, 132, 171) |
| HSL | hsl(196, 76%, 38%) |
| OKLCH | oklch(57.5% 0.107 228.9) |
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 #1784AB | 4.26:1 | AA large text | Lc -74.5 | Content text, not long reading |
| Black text on #1784AB | 4.92:1 | AA | Lc 35.1 | Non-text elements, placeholder text |
| #1784AB text on white | 4.26:1 | AA large text | Lc 69.0 | Content text, not long reading |
| #1784AB text on black | 4.92:1 | AA | Lc -32.7 | 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
#F1F6F9
oklch(97% 0.007 233.6)
-
Step 100
100
#E1ECF1
oklch(93.6% 0.014 226.6)
-
Step 200
200
#C8DDE7
oklch(88.5% 0.026 227.9)
-
Step 300
300
#A1C7DA
oklch(80.8% 0.049 229.7)
-
Step 400
400
#6BAAC7
oklch(70.6% 0.077 229)
-
Step 500
500
#3D95B9
oklch(63.2% 0.099 228.5)
-
Step 600
600 (this color)
#1784AB
oklch(57.5% 0.107 228.9)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#045773
oklch(42.7% 0.083 229)
-
Step 900
900
#13485D
oklch(37.8% 0.065 228.9)
-
Step 950
950
#0D2A36
oklch(26.9% 0.041 228.4)
#1784AB 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) | #7082AD | 0.076 |
| Deuteranopia (no green cones) | #5D75AA | 0.064 |
| Tritanopia (no blue cones) | #008F91 | 0.060 |
| Achromatopsia (no color) | #7A7A7A | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1784AB
#1784AB
oklch(57.5% 0.107 228.9)
- #AB643B
#AB643B
oklch(57.5% 0.107 49.4)
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 #1784AB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.018
- Teal Blue #01889F ΔE 0.026
- Nice Blue #107AB0 ΔE 0.033
- Steel Blue #4682B4 ΔE 0.034
- Cerulean #457B9D ΔE 0.036
- Cool Blue #4984B8 ΔE 0.040
- Stormy Blue #507B9C ΔE 0.044
- Ocean #017B92 ΔE 0.044
Use #1784AB 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.