#1C84BF
Closest named color: Water Blue (#0E87CC). oklch(58.6% 0.126 240.4), rgb(28, 132, 191).
Aa
Black text reads best on this color (5.10:1).
About this color
#1C84BF is a medium-dark, moderately saturated blue. In OKLCH its lightness is 59%, its chroma 0.126 and its hue 240°. Its hue sits on the cool side of the wheel. The nearest named color is Water Blue (#0E87CC), ΔE 0.020 away. Black text reads best on it, at 5.10:1.
| Hue family | Blues |
| Lightness | medium-dark (59%) |
| Chroma | moderately saturated (0.126) |
| Temperature | cool |
| Nearest name | Water Blue (#0E87CC) |
| Black text | 5.10:1 |
| White text | 4.11:1 |
Values
| HEX | #1C84BF |
| RGB | rgb(28, 132, 191) |
| HSL | hsl(202, 74%, 43%) |
| OKLCH | oklch(58.6% 0.126 240.4) |
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 #1C84BF | 4.11:1 | AA large text | Lc -73.3 | Content text, not long reading |
| Black text on #1C84BF | 5.10:1 | AA | Lc 36.3 | Non-text elements, placeholder text |
| #1C84BF text on white | 4.11:1 | AA large text | Lc 67.8 | Content text, not long reading |
| #1C84BF text on black | 5.10:1 | AA | Lc -33.8 | 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
#F1F6FA
oklch(97.1% 0.008 241.7)
-
Step 100
100
#E1ECF4
oklch(93.7% 0.016 239.1)
-
Step 200
200
#C7DCEC
oklch(88.4% 0.032 240.7)
-
Step 300
300
#A0C6E2
oklch(80.8% 0.057 240.3)
-
Step 400
400
#6AA8D4
oklch(70.7% 0.091 240.7)
-
Step 500
500
#3C92C9
oklch(63.2% 0.116 240.4)
-
Step 600
600 (this color)
#1C84BF
oklch(58.6% 0.126 240.4)
-
Step 700
700
#00679A
oklch(49.1% 0.113 240.5)
-
Step 800
800
#03547E
oklch(42.6% 0.097 240.5)
-
Step 900
900
#124666
oklch(37.7% 0.076 240.7)
-
Step 950
950
#0D293B
oklch(26.9% 0.047 240.1)
#1C84BF 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) | #6885C2 | 0.064 |
| Deuteranopia (no green cones) | #5277BE | 0.049 |
| Tritanopia (no blue cones) | #009399 | 0.084 |
| Achromatopsia (no color) | #7D7D7D | 0.126 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #1C84BF
#1C84BF
oklch(58.6% 0.126 240.4)
- #B1671B
#B1671B
oklch(58.5% 0.126 60.2)
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 #1C84BF, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Water Blue #0E87CC ΔE 0.020
- Steel Blue #4682B4 ΔE 0.029
- Cool Blue #4984B8 ΔE 0.030
- Blue NCS #118AB2 ΔE 0.030
- Windows Blue #3778BF ΔE 0.035
- Nice Blue #107AB0 ΔE 0.035
- Off Blue #5684AE ΔE 0.047
- Flat Blue #3C73A8 ΔE 0.053
Use #1C84BF 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.