#1787AF
Closest named color: Blue NCS (#118AB2). oklch(58.4% 0.11 229), rgb(23, 135, 175).
Aa
Black text reads best on this color (5.12:1).
About this color
#1787AF is a medium-dark, moderately saturated teal or cyan. In OKLCH its lightness is 58%, its chroma 0.110 and its hue 229°. Its hue sits on the cool side of the wheel. The nearest named color is Blue NCS (#118AB2), ΔE 0.009 away. Black text reads best on it, at 5.12:1.
| Hue family | Teals and cyans |
| Lightness | medium-dark (58%) |
| Chroma | moderately saturated (0.110) |
| Temperature | cool |
| Nearest name | Blue NCS (#118AB2) |
| Black text | 5.12:1 |
| White text | 4.10:1 |
Values
| HEX | #1787AF |
| RGB | rgb(23, 135, 175) |
| HSL | hsl(196, 77%, 39%) |
| OKLCH | oklch(58.4% 0.11 229) |
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 #1787AF | 4.10:1 | AA large text | Lc -73.2 | Content text, not long reading |
| Black text on #1787AF | 5.12:1 | AA | Lc 36.4 | Non-text elements, placeholder text |
| #1787AF text on white | 4.10:1 | AA large text | Lc 67.7 | Content text, not long reading |
| #1787AF text on black | 5.12:1 | AA | Lc -34.0 | 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
#E1ECF2
oklch(93.7% 0.014 231.2)
-
Step 200
200
#C8DDE8
oklch(88.5% 0.027 230.4)
-
Step 300
300
#A0C7DA
oklch(80.8% 0.049 229.1)
-
Step 400
400
#6AAAC8
oklch(70.6% 0.079 229.5)
-
Step 500
500
#3B95BA
oklch(63.2% 0.101 228.8)
-
Step 600
600 (this color)
#1787AF
oklch(58.4% 0.11 229)
-
Step 700
700
#006A8C
oklch(49% 0.097 229.1)
-
Step 800
800
#005773
oklch(42.7% 0.084 228.5)
-
Step 900
900
#11485D
oklch(37.7% 0.065 228.4)
-
Step 950
950
#0D2A37
oklch(27% 0.042 230.5)
#1787AF 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) | #7285B1 | 0.077 |
| Deuteranopia (no green cones) | #5F77AE | 0.066 |
| Tritanopia (no blue cones) | #009294 | 0.061 |
| Achromatopsia (no color) | #7D7D7D | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1787AF
#1787AF
oklch(58.4% 0.11 229)
- #AF663D
#AF663D
oklch(58.4% 0.109 48.8)
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 #1787AF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blue NCS #118AB2 ΔE 0.009
- Teal Blue #01889F ΔE 0.027
- Steel Blue #4682B4 ΔE 0.032
- Cool Blue #4984B8 ΔE 0.036
- Nice Blue #107AB0 ΔE 0.040
- Cerulean #457B9D ΔE 0.042
- Off Blue #5684AE ΔE 0.043
- Water Blue #0E87CC ΔE 0.045
Use #1787AF 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.