#2180FF
Closest named color: Clear Blue (#247AFD). oklch(61.9% 0.207 257.9), rgb(33, 128, 255).
Aa
Black text reads best on this color (5.59:1).
About this color
#2180FF is a medium-dark, vivid blue. In OKLCH its lightness is 62%, its chroma 0.207 and its hue 258°. Its hue sits on the cool side of the wheel. The nearest named color is Clear Blue (#247AFD), ΔE 0.015 away. Black text reads best on it, at 5.59:1.
| Hue family | Blues |
| Lightness | medium-dark (62%) |
| Chroma | vivid (0.207) |
| Temperature | cool |
| Nearest name | Clear Blue (#247AFD) |
| Black text | 5.59:1 |
| White text | 3.75:1 |
Values
| HEX | #2180FF |
| RGB | rgb(33, 128, 255) |
| HSL | hsl(214, 100%, 56%) |
| OKLCH | oklch(61.9% 0.207 257.9) |
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 #2180FF | 3.75:1 | AA large text | Lc -69.9 | Content text, not long reading |
| Black text on #2180FF | 5.59:1 | AA | Lc 39.7 | Non-text elements, placeholder text |
| #2180FF text on white | 3.75:1 | AA large text | Lc 64.4 | Content text, not long reading |
| #2180FF text on black | 5.59:1 | AA | Lc -37.3 | 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
#F0F6FF
oklch(97.1% 0.014 258.3)
-
Step 100
100
#DEEBFE
oklch(93.6% 0.029 257.8)
-
Step 200
200
#C3DBFF
oklch(88.5% 0.056 258.4)
-
Step 300
300
#9AC3FF
oklch(81% 0.096 257.8)
-
Step 400
400
#60A1FF
oklch(70.8% 0.154 257.7)
-
Step 500
500 (this color)
#2180FF
oklch(61.9% 0.207 257.9)
-
Step 600
600
#006CE8
oklch(55.6% 0.205 258)
-
Step 700
700
#005AC4
oklch(49% 0.181 258)
-
Step 800
800
#004AA3
oklch(42.8% 0.158 257.9)
-
Step 900
900
#033D87
oklch(37.6% 0.136 258)
-
Step 950
950
#07254F
oklch(27.1% 0.085 257.9)
#2180FF 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) | #2B8EFF | 0.037 |
| Deuteranopia (no green cones) | #007BFD | 0.017 |
| Tritanopia (no blue cones) | #009FB3 | 0.158 |
| Achromatopsia (no color) | #848484 | 0.208 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2180FF
#2180FF
oklch(61.9% 0.207 257.9)
- #B07A00
#B07A00
oklch(61.9% 0.129 77.7)
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 #2180FF, closest first.
No curated palette has a color within ΔE 0.04 of #2180FF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Clear Blue #247AFD ΔE 0.015
- Dodger Blue #1E90FF ΔE 0.041
- Cerulean Blue #056EEE ΔE 0.053
- Cornflower #6A79F7 ΔE 0.062
- Dark Sky Blue #448EE4 ΔE 0.063
- Soft Blue #6488EA ΔE 0.068
- Bright Blue #0165FC ΔE 0.068
- Royal Blue #4169E1 ΔE 0.068
Use #2180FF 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.