#2164BC
Closest named color: Mid Blue (#276AB3). oklch(51.1% 0.154 257), rgb(33, 100, 188).
Aa
White text reads best on this color (5.81:1).
About this color
#2164BC is a medium-dark, vivid blue. In OKLCH its lightness is 51%, its chroma 0.154 and its hue 257°. Its hue sits on the cool side of the wheel. The nearest named color is Mid Blue (#276AB3), ΔE 0.024 away. White text reads best on it, at 5.81:1.
| Hue family | Blues |
| Lightness | medium-dark (51%) |
| Chroma | vivid (0.154) |
| Temperature | cool |
| Nearest name | Mid Blue (#276AB3) |
| Black text | 3.61:1 |
| White text | 5.81:1 |
Values
| HEX | #2164BC |
| RGB | rgb(33, 100, 188) |
| HSL | hsl(214, 70%, 43%) |
| OKLCH | oklch(51.1% 0.154 257) |
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 #2164BC | 5.81:1 | AA | Lc -83.8 | Fine for body text |
| Black text on #2164BC | 3.61:1 | AA large text | Lc 25.5 | Dividers and decoration only |
| #2164BC text on white | 5.81:1 | AA | Lc 78.6 | Fine for body text |
| #2164BC text on black | 3.61:1 | AA large text | Lc -23.2 | Dividers and decoration only |
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 700.
-
Step 50
50
#F1F6FC
oklch(97.1% 0.01 252.8)
-
Step 100
100
#E1EBF9
oklch(93.7% 0.022 256.7)
-
Step 200
200
#C8DBF5
oklch(88.5% 0.041 256.2)
-
Step 300
300
#A2C3F1
oklch(80.9% 0.075 256.7)
-
Step 400
400
#6FA2EA
oklch(70.6% 0.119 257.1)
-
Step 500
500
#4889E3
oklch(63.1% 0.152 257.1)
-
Step 600
600
#2871D1
oklch(55.6% 0.165 257)
-
Step 700
700 (this color)
#2164BC
oklch(51.1% 0.154 257)
-
Step 800
800
#184D93
oklch(42.7% 0.128 257.1)
-
Step 900
900
#1B4175
oklch(37.7% 0.099 257.1)
-
Step 950
950
#112644
oklch(26.9% 0.062 257.5)
#2164BC 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) | #336DBF | 0.030 |
| Deuteranopia (no green cones) | #025FBA | 0.020 |
| Tritanopia (no blue cones) | #007987 | 0.116 |
| Achromatopsia (no color) | #656565 | 0.154 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #2164BC
#2164BC
oklch(51.1% 0.154 257)
- #885D00
#885D00
oklch(51.1% 0.107 77.4)
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 #2164BC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Blue #276AB3 ΔE 0.024
- French Blue #436BAD ΔE 0.045
- Windows Blue #3778BF ΔE 0.060
- Flat Blue #3C73A8 ΔE 0.063
- Royal Blue #4169E1 ΔE 0.066
- Peacock Blue #016795 ΔE 0.067
- Nice Blue #107AB0 ΔE 0.068
- Muted Blue #3B719F ΔE 0.068
Use #2164BC 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.